JP2008222073A - Vehicular suspension device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension device capable of easily arranging wiring for supplying electric power to an electromagnetic actuator. <P>SOLUTION: A plurality of electric power supplying passage forming elements 230 for supplying electric power to the electromagnetic actuator are arranged so as to penetrate an upper support 22. A plurality of holes penetrating a vehicle body side member 32, a mount rubber 112 of the upper support 22, an abutting plate 110, and a stud bolt 114 are provided, and the electric power supplying passage forming elements 230 are respectively made to pass through the holes and arranged. A part penetrating the mount rubber 112 is made to be a parallel cord portion 238, and a small-diameter cord 236 is easily deformed according to the deformation of the mount rubber 112. A connecting terminal 290 with a long pin is provided so as to penetrate the stud bolt 114, constitutes a part of a motor side connector 232 attached to a tip end of the stud bolt 114, and can be easily connected to a power source side connector 224. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle suspension apparatus, and more particularly to a suspension apparatus provided with an electromagnetic actuator.

In recent years, vehicle suspension devices equipped with electromagnetic actuators have been studied. For example, by generating a force in a direction that causes the vehicle body and the wheel to approach and separate from each other by the electromagnetic actuator, it is possible to more appropriately suppress the posture change and vibration of the vehicle body. Patent Document 1 below describes an example of a suspension device provided with an electromagnetic actuator. Patent Documents 2 to 4 below describe examples of a suspension device including a load sensor and the like.
Japanese Patent Laid-Open No. 2-120113 JP-A-8-313372 JP-A 63-43241 Japanese Utility Model Publication No. 5-12209

Electromagnetic actuators are often supplied with a relatively large current, and require relatively thick wires and large connectors. In this case, there is a problem of how to handle and connect the wiring. However, Patent Document 1 does not describe a wiring for supplying power to the electromagnetic actuator. In the above Patent Documents 2 to 4, the signal line of the load sensor and the handling of the electric wire of the damping force changing device are described. However, since the signal line of the load sensor is relatively thin, the electric wire connected to the electromagnetic actuator is relatively thick and the connecting connector is large. There is a problem that is not limited.
Such a problem is an example of a problem that can be an obstacle to improving the practicality of a conventional suspension device, and there is room for improvement from various viewpoints in the suspension device. That is, by improving the conventional suspension device, it is possible to make the suspension device more practical, for example, the wiring to the electromagnetic actuator can be easily arranged. The present invention has been made in view of such circumstances, and an object of the present invention is to improve the practicality of the suspension device.

  In order to solve the above-described problems, a suspension device according to the present invention is supplied from an electromagnetic coupling device that generates a force in a direction in which the wheel-side coupling body and the vehicle body-side coupling body are moved closer to and away from each other by an electromagnetic actuator, and a power source inside the vehicle body. Including a plurality of conductive path forming bodies for guiding the electric power to the electromagnetic actuator, and a plurality of conductive path penetrating parts provided through the vehicle body side coupling body and penetrating the corresponding one or more conductive path forming bodies. Features.

  In the suspension device of the present invention, a plurality of conductive path penetrating portions are provided, and a plurality of conductive path forming bodies for supplying electric power to the electromagnetic actuator are wired in a plurality of sets. Therefore, as compared with an aspect in which a plurality of conductive path forming bodies are combined into one, each assembly is easily bent, and the arrangement is relatively easy. That is, according to the present invention, a highly practical suspension device can be obtained. Various aspects of the suspension device of the present invention and their functions and effects will be described in detail in the following [Aspect of the Invention] section.

Aspects of the Invention

  In the following, some aspects of the invention that can be claimed in the present application (hereinafter sometimes referred to as “claimable invention”) will be exemplified and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which some constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention.

  In each of the following paragraphs, the combination of paragraphs (1) and (4) is in claim 1, and the combination of paragraphs (2) and (3) is in claim 2, ) And (6) are combined in claim 3, and (7) and (8) are combined in claim 4, and (9) and (10) are combined. (11) is in claim 6, (14) and (15) are combined in claim 7, (16) is in claim 8, (19) ) Corresponds to claim 9 respectively.

(1) a wheel-side connected body connected to the wheel holding portion;
A vehicle body side connected body connected to a part of the vehicle body;
An electromagnetic coupling device that includes an electromagnetic actuator, connects the wheel-side coupling body and the vehicle body-side coupling body so as to be capable of approaching and separating, and generates a force in a direction in which the electromagnetic actuator approaches and separates them;
A plurality of conductive path forming bodies for forming a conductive path for guiding electric power supplied from a power source inside the vehicle body to the electromagnetic actuator;
1. One or more conductive path penetrating portions provided through the vehicle body side coupling body and penetrating one or more corresponding ones of the plurality of conductive path forming bodies. .
The electromagnetic coupling device of this section can generate an approaching / separating force that is a force in a direction (hereinafter referred to as an approaching / separating direction) in which the wheel holding portion and a part of the vehicle body are approached / separated by an electromagnetic actuator. In addition, a wheel holding part is a part containing the member which hold | maintains wheels, such as a steering knuckle and an arm, rotatably. In addition, the wheel-side connected body is a part called a lower support, for example, and is a part connected to a steering knuckle, an arm, or the like. A part of the vehicle body may be referred to as a suspension tower or the like, for example, and is a part corresponding to a wheel in the vehicle body, and a part to which the vehicle body side connection body is attached (for example, a connection body attachment portion). Is possible). Further, the vehicle body side coupling body is called, for example, an upper support, a mount insulator or the like, and is often fastened to a part of the vehicle body.
The electromagnetic coupling device of this section can suppress, for example, vibrations of the vehicle body caused by road surface input or suppress changes in the posture of the vehicle body by generating an approaching / separating force. The electromagnetic actuator can generate an approaching / separating force, for example, by supplying electric power through a conductive path forming body or by generating electric power in a circuit including the conductive path forming body. When the suspension device includes a coil spring or a gas spring, an approaching / separating force can be generated by the spring and the electromagnetic actuator.
The conductive path forming body may include, for example, an electric wire, a connection terminal, and the like, and is formed of a conductive metal (for example, copper, aluminum, iron, silver, or an alloy thereof) or other conductive material. be able to. The electric wire can be, for example, a covered electric wire with insulating coating or a bare electric wire without covering. Further, the conductive portion of the electric wire may be made conductive by, for example, a relatively thick conductive wire, or a plurality of relatively thin conductive wires are arranged in parallel or twisted together. It may be a single electric wire.
In addition, when a bare wire is included, it is desirable that the periphery of the bare wire is an insulator, and a separation distance from other conductors is secured. In addition to the electric wire, the conductive path forming body may include a member having relatively poor flexibility such as a metal connection terminal. In addition, it is desirable that those conductive materials are electrically insulated from a part of the vehicle body and the vehicle body side connector by the insulator. The insulator may include at least one of rubber, a rubber analog, resin, ceramics, and the like. The rubber analog will be described later.
In the aspect of this section, the plurality of conductive path forming bodies are disposed on the upper side of the suspension device. In this case, it is conceived that a plurality of conductive path forming bodies are routed so as to bypass the vehicle body side coupling body as in the prior art described above. It is often not easy to do. For example, the aspect of this section may be an aspect in which the connecting body through hole, which is a hole that penetrates a part of the electromagnetic coupling apparatus in the approaching and separating direction, is provided in the vehicle body side coupling body as in an aspect described later. it can. In this case, a gap is provided between the coupling device through hole and the outer peripheral portion of the electromagnetic coupling device, but it is often not wide enough to pass a relatively thick electric wire. Further, for example, even when a rod included in the electromagnetic coupling device is passed through the coupling device through hole, it may be difficult to provide a hole having a size that allows a plurality of electric wires or the like to pass therethrough.
On the other hand, in the aspect of this section, a conductive path penetrating portion is provided, and a plurality of conductive path forming bodies are disposed so as to penetrate the vehicle body side connector. Therefore, it is not necessary to be restricted when the vehicle body side coupling body is detoured, and a plurality of conductive path forming bodies can be easily arranged. That is, according to the aspect of this section, a highly practical suspension device can be obtained.
For example, if the conductive path penetration portion is simple, it can be a through hole that penetrates the vehicle body side coupling body, and the conductive path assembly can be passed through the through hole. For example, it can also be set as the electroconductive part which is the electroconductive part formed penetrating the vehicle body side coupling body. The conductive portion may constitute a part of the conductive path forming body. In addition, when the part around the electroconductive part of a vehicle body side coupling body is electroconductive, it is desirable that the said electroconductive part and other parts are electrically insulated.
(2) Each of the plurality of conductive path forming bodies includes an actuator side connection terminal connected to a corresponding one of a plurality of power supply side connection terminals electrically connected to a power supply inside the vehicle body. (1) The vehicle suspension device according to item.
In the aspect of this section, the actuator side connection terminal is connected to the end of each conductive path forming body. If the power supply side connection terminal fitted to the actuator side connection terminal is provided at the end of the power supply line connected to the power supply, each conductive path forming body and the power supply line can be easily connected when the suspension device is assembled. can do.
For example, the actuator side connection terminal can be fixed to the vehicle body side connection body as in an embodiment described later. In this case, after the vehicle body side coupling body is fixed to a part of the vehicle body, each conductive path forming body and the power line are easily electrically connected by connecting the power source side connection terminal to the actuator side connection terminal. be able to. A mode in which the actuator side connection terminal is fixed to the vehicle body side coupling body includes a mode in which the power source side connection terminal penetrates the vehicle body side coupling body from the vehicle body side to the electromagnetic coupling device side. In that case, the conductive path forming body may include at least a portion of the power supply side connection terminal that penetrates the vehicle body side connection body.
In addition, for example, the conductive path forming body (electric wire or the like) is passed through the through hole (conductive path penetrating portion) of the vehicle body side coupling body, and the actuator side connection terminal is connected to the distal end portion of the conductive path forming body extending to the vehicle body side. Can be provided. In that case, for example, the power supply side connection terminal can be fixed in the vehicle body in advance, and each conductive path forming body and the power supply line can be easily connected by connecting the actuator side connection terminal to the power supply side connection terminal. Can be electrically connected.
In addition, when there are a plurality of conductor path forming bodies to which power of the same phase is supplied, the actuator side connection provided in each of the plurality of conductive path forming bodies to which the power of the same phase is supplied The terminals may be formed as separate parts or may be formed as an integral part.
(3) In the item (2), each of the one or more conductive path penetrating portions includes a terminal holding section that holds the actuator side connection terminal of each of the one or more conductive path forming bodies corresponding thereto. Vehicle suspension system.
In this mode, a terminal holding portion that holds the actuator side connection terminal is provided in the conductive path penetrating portion, and the actuator side connection terminal is fixed to the vehicle body side coupling body. That is, the actuator-side connector including the actuator-side connection terminal and the terminal holding portion is provided on the vehicle body-side coupling body.
According to the aspect of this section, the actuator-side connection terminal is fixed before the suspension device is assembled to the vehicle. The storage device is stored, transported, assembled, etc. It is possible to prevent the connection terminal from moving slowly. In addition, as described above, after the vehicle body side coupling body is fixed to a part of the vehicle body, the power supply side connection terminals are connected to the actuator side connection terminals, so that each conductive path forming body and the power supply line can be easily connected to each other. Can be connected.
In the aspect of this section, for example, the actuator side connection terminal can be fixed to the vehicle body side portion of the vehicle body side coupling body, and in that case, for example, a through hole (which is one aspect of the conductive path penetration part) Can be disposed through the conductive path former. In addition, for example, the actuator side connection terminal can be fixed to the vehicle body side connection body or a portion of the electromagnetic connection device side thereof. In this case, for example, as described above, at least a part of the power supply side connection terminal is connected to the vehicle body. By inserting into the through hole from the vehicle body side of the side coupling body and connecting to the actuator side connection terminal, each conductive path forming body and the power line can be easily connected. Furthermore, for example, the length dimension of the actuator side connection terminal can be set to a length that can penetrate the vehicle body side coupling body, and the actuator side connection terminal can be held in a state of penetrating the vehicle body side coupling body.
The terminal holding part desirably has an insulating property, and can be formed of, for example, a material such as resin, rubber, an analog of rubber (described later), or ceramics.
In the aspect of this section, in a state where the vehicle body side coupling body is fixed to a part of the vehicle body, the conductive path assembly and the power supply side connection terminal are provided in a portion corresponding to the conductive path penetration portion in a part of the vehicle body. It is desirable that a hole for penetrating the like is provided.
(4) The one or more conductive path penetration portions are a plurality of conductive path penetration portions,
The plurality of conductive path forming bodies are divided into a plurality of sets corresponding to the plurality of conductive path penetrating portions, and the plurality of sets are deformable separately from each other in at least a part of the wiring paths. The vehicle suspension device according to any one of items (1) to (3).
As described above, since an electromagnetic actuator consumes a relatively large current, a relatively thick electric wire is required to supply electric power. In general, in order to supply electric power, a plurality of electric wires (for example, three wires) insulated from each other are collected into one electric wire. However, when a plurality of relatively thick electric wires are combined into one, rigidity is increased and bending is difficult, so that the degree of freedom in arrangement is relatively low. In addition, a relatively large connector such as a connector for connecting the thick electric wire is required, and restrictions on the installation location are increased.
On the other hand, in the aspect of this section, a plurality of conductive path forming bodies that supply electric power to the electromagnetic actuator are a plurality of sets each including one or more conductive path forming bodies (when each set is referred to as a conductive path aggregate) Are divided) and wired. Therefore, as compared with an embodiment in which a plurality of conductive path forming bodies are combined into one, each conductive path aggregate is easy to bend and arrangement is relatively easy. Moreover, when a connection tool is provided in each of the plurality of sets, the connection tool can be made small. Furthermore, according to the aspect of this section, a plurality of sets are made to pass through different conductive path penetration portions, and the arrangement place of each set can be widened. Moreover, when a connection tool is provided, it can be made difficult for a connection tool to mutually interfere. As described above, according to the aspect of this section, it is possible to make each set easier to bend and relatively easily arrange compared to an aspect in which a plurality of conductive path forming bodies are combined into one.
In addition, when one set includes a plurality of conductive path forming bodies, the plurality of conductive path forming bodies can be deformed separately from each other in at least a part of the wiring paths. Deformation is easy.
In addition, when one set includes a plurality of conductive path forming bodies, the plurality of conductive path forming bodies may be connected to the same phase among the plurality of phases of the power source or to different phases. May be. For example, for the electric power supplied to the electromagnetic actuator, (i) a plurality of conductive path forming bodies are connected to each phase, and a plurality of conductive path forming bodies of the same phase are associated with each conductive path penetrating part. , (Ii) Connect a conductive path forming body of each phase multiple of the number of power phases (for example, a multiple of 3), and correspond to one or more conductive path forming bodies for each phase through each conductive path. Can be made. In these aspects, a plurality of conductive path forming bodies are provided for each phase of electric power, and when some of the conductive path forming bodies are disconnected, for example, the output can be lowered to operate the electromagnetic actuator. Therefore, the fail-safe property can be improved.
(5) The one or more conductive path penetration parts are a plurality of conductive path penetration parts,
The vehicle body side coupling body is a plurality of male screw members projecting toward the vehicle body side and penetrating a part of the vehicle body, each having an axial through hole, and at least a part of each of the plurality of conductive path through portions. The vehicle suspension device according to any one of items (1) to (4), including the one to be formed.
In the aspect of this section, when the suspension device is attached to the vehicle, a female screw member such as a nut is screwed into a part of the vehicle body with the male screw member passing through, so that the vehicle body side connector is joined to a part of the vehicle body. It is concluded. And the external thread member has comprised the cylinder shape and can let a conductive path formation body pass inside. Since a fastening hole through which the male screw member is normally passed is usually provided in a part of the vehicle body, the aspect of this section has an advantage that it is not necessary to provide another hole for wiring.
(6) Each of the plurality of conductive path forming bodies includes an actuator side connection terminal connected to a power source side connection terminal electrically connected to a power source inside the vehicle body,
The vehicle suspension device according to (5), wherein each of the plurality of conductive path penetration portions includes a terminal holding portion that is provided in each of the plurality of male screw members and holds the actuator-side connection terminal.
According to the aspect of this section, the actuator side connection terminal can be fixed to the vehicle body side coupling body relatively easily by attaching the terminal holding portion to the male screw member. In that case, the outer diameter of both the terminal holding part and the actuator side connection terminal should be less than the inner diameter of the male screw member, and the terminal holding part etc. should be provided inside the male screw member, or the outer diameter of the male screw member should be less than A holding part etc. can be provided in the tip of a male screw member, and it can control that the hole for fastening provided in a part of vehicle body becomes larger than necessary. The actuator-side connection terminal in this section is the same as that described in the above section (2), and the terminal holding portion in this section is the same as that described in the above section (3).
(7) The vehicle body-side coupling body includes a support body that supports a part of the vehicle body, and an elastic coupling portion that is formed of rubber or the like and interposed between the support body and the electromagnetic coupling device. The vehicle suspension device according to any one of (1) to (6).
In the aspect of this section, the relative movement between the end of the electromagnetic coupling device and a part of the vehicle body is allowed to some extent due to the presence of the elastic coupling portion. In this aspect, since the conductive path forming bodies are deformed with their relative movement (described later), it is desirable that each conductive path forming body or a set of the conductive path forming bodies be easily deformed.
The elastic connecting portion of this section may be called, for example, a support rubber, a mount rubber or the like, and is usually provided in many suspension devices. The rubber analog can be, for example, synthetic rubber (for example, thermoplastic elastomer), a mixture of rubber and synthetic rubber, or the like. The support is made of a material harder than rubber, such as metal or hard synthetic resin.
(8) The vehicle suspension device according to (7), wherein each of the one or more conductive path penetrating portions penetrates the support and the elastic coupling portion.
In the aspect of this section, the conductive path aggregate is disposed in a state of penetrating the elastic connecting portion. Therefore, for example, when the elastic connecting portion is disposed in a state of crossing between the power supply line and the electromagnetic actuator, the electromagnetic actuator and the power supply line are relatively compared with the case of bypassing the elastic connecting portion. It can be connected at a short distance.

In the aspect of this section, there is an aspect in which a gap exists between the conductive path forming body and the elastic coupling part (for example, when the conductive path penetrating part is a larger through hole than the conductive path forming body) and In addition, a mode in which the conductive path forming body and the elastic connecting portion are in close contact with each other without a gap (for example, a mode in which an electric wire or the like is cast with rubber or the like) is included. In an aspect in which a gap exists between the conductive path forming body and the elastic connecting portion, the conductive path forming body can be relatively easily deformed with the deformation of the elastic connecting portion. On the other hand, in the aspect in which the conductive path forming body and the elastic connecting portion are in close contact with each other, the insulating property of the conductive path forming body is relatively excellent. In the aspect in which the conductive path forming body and the elastic connecting portion are in close contact with each other, it is desirable that the conductive path forming body is covered and the elastic connecting portion is in close contact with the covering. This is because when the elastic connecting portion is deformed, the conductive path forming body is relatively easily deformed due to slippage between the conductive path forming body and the covering.
In addition, the aspect of this section is suitable when the elastic coupling portion is disposed on the electromagnetic coupling device side of the male screw member in the aspect dependent on the above-mentioned item (5) or (6).

(9) Each of the plurality of conductive path forming bodies includes an easily deformable conductive portion that connects two set points, and each of the easily deformable conductive portions is a single electric wire that connects the two points. It is easier to deform than when assuming a standard single wire where the center line of the wire matches the center line of each easily deformable conductive part and the allowable conductive power is the same as the allowable conductive power of each easily deformable conductive part. The vehicle suspension device according to any one of (1) to (8).
In the aspect of this section, at least a part of the conductive path forming body is easily deformed, and the arrangement of the conductive path forming body is further facilitated.
The standard single electric wire to be compared with the easily deformable conductive portion is a virtual wire, and is arranged along the center line of the easily deformable conductive portion. The center line of the easily deformable conductive portion can be, for example, a line passing through the center position, the center of gravity position, and the like. Note that the standard single wire is a virtual wire, but instead of assuming an unrealistic one that passes through an obstacle, a realistic route such as detouring the obstacle according to the situation is used. It is desirable to assume what passes.
In addition, the standard single electric wire is assumed to have a thickness that allows the same allowable conduction power as the easily deformable conductive portion. The allowable conduction power is a power that is allowed to be continuously conducted by the conductor, and can be determined by a method similar to a method of determining an allowable current or a current capacity or determining them. it can. When the easily deformable conductive portion is an electric wire, the material (conductive material or the like) of the standard single wire is the same as that of the easily deformable conductive portion. Moreover, although it is easy to compare as a thing without a coating, the presence or absence of a coating can also be made the same.

When the easily deformable conductive portion is not an electric wire, the electric wire included in the conductive path forming body, the material of the power supply line, or a general conductive material (copper, copper alloy, etc.) can be used. In addition, the permissible conduction power of a standard single electric wire can also be made the same as the conductive path formation body corresponding to it, for example.
The ease of deformation is often advantageous in terms of the durability of the conductive path forming body. For example, when the mode of this section is subordinate to the above section (7) or (8), the suspension device of this section is mounted on a vehicle and the electromagnetic coupling device and the vehicle body are Some relative movement with the part is allowed. And with those relative movements, the portion of the conductive path forming body fixed to the vehicle body side and the portion fixed to the electromagnetic coupling device side are relatively moved, and the conductive path forming body, particularly the wire portion, is moved. It will be deformed (stretching deformation, bending deformation, etc.). There is a risk that the electric wire may be disconnected by such deformation or by repeating the deformation. Even if the electric wire itself is not disconnected, the electric connection between the electric wire and the connection terminal by soldering, screwing, caulking, or the like may be incomplete. On the other hand, according to the aspect of this section, since it can be easily deformed in the easily deformable conductive portion, the relative movement between the portion fixed on the vehicle body side and the portion fixed on the electromagnetic coupling device side can be absorbed without difficulty. The possibility of disconnection or the like can be reduced. In other words, the aspect of this section is particularly suitable when both end portions of the easily deformable conductive portion are moved relative to each other.
Further, in the case where the easily deformable conductive portion is constituted by an electric wire and the aspect of this item is subordinate to the above item (7) or (8), for example, the length of the electric wire is set as a part of the vehicle body. The length of the electromagnetic coupling device can be longer than the length necessary for electrically connecting the two set points in a state where the electromagnetic coupling device can be separated as much as possible by relative movement. If it does in this way, even if a part of vehicle body and an electromagnetic coupling device move relatively, it can control that an electric wire is extended too much and can reduce a possibility of disconnection etc. of an electric wire.
The features of this section to the following section (19) can be adopted independently of the features of the above sections (1) to (8).
(10) Compared to the standard single electric wire, the easily deformable conductive portion is (a) the relative movement of the two points when the same force is applied to move the two points in a direction to approach or separate from each other. The amount is 1.5 times or more, (b) the amount of elastic deformation of the two points in the approaching / separating direction is 1.5 times or more, and (c) the two points are approached or separated from each other. The vehicle suspension device according to the item (9), which satisfies at least one of a maximum distortion generated in the case of 75% or less.
The aspect of this section specifically defines the ease of deformation of the easily deformable conductive portion. In short, (a) is the ease of expansion and contraction, and the deformation becomes easier when the relative movement amount is larger than 2 times or more than 3 times. (b) is the amount that can be relatively moved in the elastic deformation region. In short, it is the amount that can be expanded and contracted without breaking, and the elastic deformation amount is as large as 2 times or more, 3 times or more. The deformation becomes easier. In short, (c) is easy to bend, and the deformation becomes easier when the maximum strain is reduced to 65% or less, 60% or less, or 55% or less.
(11) The easily deformable conductive portion includes a parallel small-diameter electric wire portion wired in parallel with each other so that each of the plurality of small-diameter wires having a diameter smaller than that of the standard single electric wire can be separately deformed. Or the suspension device for vehicles as described in the item (10).
The aspect of this term is an aspect in which the easily deformable conductive portion is formed by a plurality of small diameter electric wires (parallel small diameter electric wire portions). The small-diameter electric wire has a lower rigidity than a single electric wire, and thus can be easily deformed. Moreover, since it is a small diameter, it is advantageous in terms of durability, for example, in that the maximum distortion due to bending is reduced. The diameter of the small-diameter wire is, for example, approximately 71% of the standard single wire when two small-diameter wires are used, and approximately 58% when three are used. The maximum strain (c) described above is proportional to the diameter, and in the above example, is approximately 71% or 58%. That is, by providing the parallel small-diameter electric wire portion, the deformation is further facilitated, and at least one of increasing the degree of freedom of arrangement and increasing the durability against deformation becomes possible.
The small-diameter electric wire also has an advantage that it is easy to bend (including a spiral shape) and have a looseness. About the curve, the spiral, etc., the feature of the aspect mentioned later is employable.
In determining the thickness of multiple small-diameter wires, the standard single wire and small-diameter wire are assumed to be the same material. For example, the sum of the cross-sectional areas (conductor parts) of multiple small-diameter wires can be It can be made equal to the cross-sectional area of one electric wire (conductor portion). It is desirable to consider the effects of heat dissipation and the like. Moreover, it is not indispensable to make the areas of the two exactly the same, but it is considered that the sizes are likely to be relatively close if the materials are the same.
Similar to a single electric wire, the small-diameter electric wire may be one in which conduction is caused by a relatively thick conductive wire, or a plurality of relatively thin conductive wires are made into one electric wire. May be good. Moreover, it can be set as a bare electric wire or a covered electric wire with insulation coating. In addition, a plurality of small-diameter electric wires may be a single electric wire or the like in which a plurality of small-diameter electric wires are connected to each other, or a plurality of small-diameter electric wires are collectively covered into a single electric wire. However, a part of the covering may be removed, and a plurality of small-diameter electric wires may be exposed in a portion where the covering is not provided, and may be separately deformable.
Note that the features of this section can be adopted independently of the features of the above paragraphs (1) to (10). In that case, for example, the above standard single electric wire is simply the same electric wire (standard electric wire) as that of the easily deformable conductive part (or conductive path forming body) whose allowable conduction power is, and the easy electric conductive part is made from the standard electric wire. Can be easily deformed. Further, for example, it is possible to adopt a mode in which the small-diameter electric wire is passed through the gap between the coupling device through hole and the electromagnetic coupling device. This is because even a gap that cannot pass a single electric wire may be able to pass through a small-diameter electric wire. In addition, because of the ease of deformation and the small diameter of the small-diameter wire, it is easy to bypass the outside of the vehicle body connecting portion. In those cases, it is preferable to call the parallel small-diameter electric wire portion in which the small-diameter wires are arranged in parallel rather than the easily deformable conductive portion. The aspect of this paragraph can include a conductive path branching tool that branches a conductive path by connecting a plurality of small-diameter electric wires to the conductive path.
(12) The vehicle suspension device according to any one of (9) to (11), wherein the easily deformable conductive portion includes an elastic conductive portion formed of a conductive elastic body.
According to an elastic body such as a spring material, rubber, or the like, the easily deformable conductive portion can be easily deformed compared to a single electric wire. As the spring material having conductivity, for example, a copper alloy such as beryllium copper, stainless steel, piano wire, or the like can be used. The shape of the spring material can be various shapes such as a coil spring shape, a leaf spring shape, and a U shape. The conductive rubber is described in the next section.
(13) The vehicle suspension device according to item (12), wherein the elastic body is formed of conductive rubber or the like.
The conductive rubber or the like may be, for example, rubber, synthetic rubber, a mixture thereof, or the like mixed with powder, short fiber, carbon black, metal, or the like. According to the aspect of this item, the conductive path forming body penetrating the elastic connecting part is disposed by replacing a part of the elastic connecting part in the aspect of the above (7) with conductive rubber or the like. be able to.
(14) The easily deformable conductive portion includes a folded portion including one or more S-shaped portions formed by bending a single electric wire equivalent to the standard single electric wire a plurality of times. Or the vehicle suspension device according to any one of (13).
In the aspect of this section, for example, the electric wire connecting between two points that can be connected linearly is intentionally loosened by bending, or the electric wire can be easily deformed by increasing the bending allowance. It is a thing. One electric wire equivalent to the standard single electric wire can be, for example, an electric wire having the same thickness as the standard single electric wire and made of the same material (conductive material or the like). It should be noted that the aspects of this section to (17) do not include the case where the electric wire is slightly bent by the wiring work. For example, it can be adapted to the standard of the above item (10) or the standard of the next item. In addition, in the aspect of the present item to the item (17), the electric wire can be maintained in a curved state, a spiral state, or the like in a free state.
(15) Each of the one or more S-shaped parts has a maximum distance between the center line of the S-shaped part itself and the center line of the electric wire constituting the S-shaped part, and the center line of the S-shaped part itself The vehicle suspension device according to item (14), wherein the value divided by the length of is a value equal to or greater than 0.3.
The aspect of this section specifically defines the shape of the S-shaped part. In addition, a deformation | transformation becomes easier when the said value is as large as 0.4 or more, 0.5 or more, and 0.6 or more.
(16) The easily deformable conductive portion includes any one of the items (9) to (15) including a spiral portion in which one electric wire equivalent to the standard single wire is spirally wound one or more times. Vehicle suspension system.
In the aspect of this section, the electric wire is wound in a coil shape so that it can be easily deformed. The spiral portion is easy to expand and contract and bend, and the risk of disconnection and the like can be further reduced. One electric wire equivalent to the standard single electric wire can be, for example, an electric wire having the same thickness and the same material as the standard single electric wire. The mode of this section can be considered as one mode of curvature. As in the above-described embodiment, for example, for one unit (one rotation) of the spiral, the maximum value of the separation distance between the center line of the spiral itself and the center line of the electric wire constituting the spiral is set to the center line of the spiral itself. The value divided by the length can be 0.2 or more, 0.3 or more, 0.4 or more, or 0.5 or more, and the larger the value, the easier the deformation.
(17) The easily deformable conductive portion includes a curved portion in which a single electric wire equivalent to the standard single electric wire is bent a plurality of times, and is 1.5 times or longer than the standard single electric wire. The vehicle suspension device according to any one of (9) to (16).
The aspect of this term prescribes | regulates the grade of a curve (a spiral is also included) with the length of an electric wire. The longer the wire, the looser and the greater the amount of bending, and the easier the deformation. Moreover, the said length can be made into 2 times or more, 3 times or more, 4 times or more of a standard single electric wire. In general, since the thickness of one electric wire is uniform, the length can be defined by the weight. For example, if the weight is 1.5 times, it can be considered that the length is 1.5 times.
(18) Each of the plurality of conductive path forming bodies includes a standard electric wire that is one electric wire having the same allowable conductive power as that of the easily deformable conductive portion, and the easily deformable conductive portion connected in series with the standard electric wire. The vehicle suspension device according to any one of (9) to (17), including:
According to the aspect of this section, the standard electric wire can be disposed in a portion where the necessity of deforming the electric wire is relatively small, and the easily deformable conductive portion can be disposed in a portion where the necessity of deforming the electric wire is relatively large. The deformation of the conductive path forming body can be facilitated effectively. In the aspect of this section, the thickness and material of the standard single electric wire described above can be the same as those of the standard electric cable of this section.
(19) Each of the one or more conductive path penetrating portions includes at least an elastic connecting portion through hole penetrating the elastic connecting portion,
The vehicle suspension device according to any one of (9) to (18), wherein the easily deformable conductive portion is disposed in a state of penetrating the elastic connecting portion through hole.
In the aspect of this section, the portion that penetrates the elastic connecting portion through hole is an easily deformable conductive portion. The elastic connecting portion is subjected to expansion / contraction deformation, shear deformation, and the like while the vehicle is running. However, since the easily deformable conductive portion is easily deformed in accordance with the deformation, the possibility of disconnection or the like can be reduced. In addition, the elastic connection part of this term can be made into what has insulation, In that case, it can be set as the aspect comprised with the bare electric wire in which the deformation | transformation easily conductive part is not insulation-coated, for example. . By doing so, the deformation of the easily deformable conductive portion is further facilitated as compared with the case where the easily deformable conductive portion is covered with an insulating coating.

(20) Items (1) to (19) in which the electromagnetic actuator generates a force in at least one of a direction in which the wheel-side connector and the vehicle body-side connector are brought closer to each other and a direction in which the wheel-side connector is separated. The suspension device for a vehicle according to any one of items 1).
The vibration of the vehicle body or the wheel can be suppressed to some extent only by the force in one direction of the direction in which the wheel holding unit and a part of the vehicle body are brought closer to each other and the direction in which the wheel holding unit is separated from the vehicle body. For example, the vibration can be suppressed by generating a force in a direction to separate them according to the approach speed between the wheel holding portion and a part of the vehicle body. However, in order to effectively suppress vibrations and suppress changes in the posture of the vehicle body, it is desirable to generate forces in both directions of approach and separation.
(21) The vehicle actuator according to any one of (1) to (20), wherein the electromagnetic actuator includes an electric motor serving as a driving force source for approaching and separating the wheel-side coupling body and the vehicle body-side coupling body. Suspension device.
The electric motor can be, for example, a rotary motor, a direct acting motor (linear motor), or the like. Moreover, either a motor with a brush or a brushless motor may be used.
(22) The electric motor is a three-phase motor that receives a three-phase alternating current to generate a driving force,
The vehicle suspension device according to item (21), wherein the plurality of conductive path penetration portions are three conductive path penetration portions corresponding to three-phase alternating currents, respectively.
The mode of this section is a mode in which a three-phase motor (for example, a DC brushless motor) is provided as a driving force source. In this case, for example, at least three conductive path forming bodies are required, but they can be individually deformed and passed through separate conductive path penetrating portions, so that the arrangement is easy. The three-phase alternating current in this section includes pseudo alternating current supplied by an inverter.
(23) The electromagnetic coupling device is
A rod having one end connected to one of the wheel side connector and the vehicle body side connector;
The rod is held relatively movable in the axial direction and immovable in the direction orthogonal to the axial direction, and is connected to the other of the wheel side coupling body and the vehicle body side coupling body at the end opposite to the rod. The vehicle suspension device according to any one of (1) to (22), including a cylindrical housing formed.
The aspect of this section is an example of the configuration of the electromagnetic coupling device. According to the aspect of this section, the portion that becomes the skeleton of the electromagnetic coupling device can be configured relatively easily by making the rod and the housing relatively movable. The rod and the housing are relatively moved in the approaching / separating direction (for example, the vertical direction).
(24) The electric motor includes a rotor rotating around an axis of the rod, and a stator fixed to the housing,
The vehicle suspension device according to item (23), wherein the electromagnetic actuator includes a motion conversion device that converts an output in the rotational direction of the rotor into a force that relatively moves the rod and the housing in the axial direction.
In this aspect, the electric motor is a rotary motor. Then, the motion conversion device converts the rotational driving force of the motor into an axial driving force. The motion conversion device can include, for example, a “ball screw” described later.
(25) The vehicle suspension device according to any one of (1) to (24), wherein the suspension device includes a spring that generates a force in a direction to separate the wheel holding portion and a part of the vehicle body.
The aspect of this section includes springs such as compression coil springs and air springs, for example. Although it is possible to support the vehicle body only with the electromagnetic actuator without using the spring, the output and power consumption of the electromagnetic actuator can be reduced by using the spring together or mainly by supporting the vehicle body with the spring. . In this aspect, for example, the electromagnetic actuator mainly generates a damping force that attenuates vibrations of the vehicle body and the wheels, or generates a force that suppresses the posture change of the vehicle body (sometimes referred to as a posture control force). It can be. Note that the electromagnetic coupling device may include a spring.
(26) The vehicle body side coupling body includes a coupling device through hole that allows a part of the electromagnetic coupling device to penetrate,
Each of the one or more conductive path penetrating portions is provided in any one of the paragraphs (1) to (25), in which the vehicle body side coupling body is provided through a portion different from the coupling device through hole. Vehicle suspension device.
The aspect of this term can be an aspect in which, for example, the electric motor is disposed in a state of penetrating the coupling device through hole. In the aspect of this section, the vehicle body-side connector can be, for example, an annular shape, and the annular portion can be provided with the conductive path penetrating portion passing therethrough. Moreover, in the aspect by which the conductive path penetration part was made into the through-hole, the through-hole will be provided separately from a connection apparatus through-hole. When the mode of this section is subordinate to the items (7), (8), and (19), the connecting device through hole is provided through the support and the elastic connecting portion. .

  Embodiments of the claimable invention will be described below with reference to the drawings. In addition to the following examples, the claimable invention can be practiced in various modifications based on the knowledge of those skilled in the art, including the aspects described in the above [Aspect of the Invention] section. .

FIG. 1 shows a front view of a suspension device 10 which is an embodiment of the claimable invention. In addition, the name in the aspect of invention is described in the parenthesis in a figure unless otherwise indicated.
The suspension device 10 is provided between the wheel holding portion and the suspension tower 14 that is a part of the vehicle body, and generates an approaching / separating force generating device 20 (a kind of electromagnetic coupling device) that generates a force in a direction to approach and separate them. An upper support 22 as a vehicle body side connecting body for connecting the approaching / separating force generating device 20 to the suspension tower 14 and a lower support 24 as a wheel side connecting body for connecting the approaching / separating force generating device 20 to the wheel holding portion. And. The wheel holding unit (not shown) includes a wheel holding member such as a steering knuckle that rotatably holds the wheel, an arm member that is connected to the vehicle body and supports the wheel holding member so as to be movable up and down.

The approaching / separating force generator 20 includes a housing 30, and supports the vehicle body by the elastic force of compressed air filled in the housing 30. The housing 30 has a car body-side member 32 (sometimes referred to as a chamber) that has a bowl-like shape with an open end, and a cylindrical shape that opens facing the opening of the car body-side member 32. A wheel side member 34 (sometimes referred to as an air piston), and a coupling film 36 (sometimes referred to as a diaphragm) that covers the gap between the openings in an airtight manner and connects them in an approachable and separable manner. including. When the vehicle body side member 32 and the wheel side member 34 are moved closer to and away from each other, the volume in the housing 30 is changed and the elastic force of the compressed air is changed. That is, the approaching / separating force generating device 20 includes an air spring, and generates a separating force that supports the vehicle body mainly by the elastic force of the compressed air.
In the present embodiment, the axial direction of the approach / separation force generator 20, that is, the direction in which the upper support 22 and the lower support 24 approach and separate is referred to as an “approach / separation direction”.

The approaching / separating force generating device 20 includes an electromagnetic actuator 40 and can generate a force (approaching / separating force) in a direction in which the wheel and the vehicle body are approached and separated. The electromagnetic actuator 40 includes an electric motor 42 that is a driving force source, and a ball screw device 44 that is a motion conversion device that converts the rotational driving force of the electric motor 42 into an axial force.
The electric motor 42 is arranged on a cylindrical motor housing 50 fixed in a state of passing through a wall surface of the housing 30 on the closed side (upper side) of the vehicle body side member 32, and an inner peripheral portion of the motor housing 50. A stator 52 provided, a hollow motor shaft 54 rotatably held in the motor housing 50, and a rotor 56 disposed on the outer periphery of the motor shaft 54 so as to face the stator 52. The electric motor 42 is a DC brushless motor and operates upon receiving a three-phase alternating current from an inverter. The stator 52 includes an electromagnet corresponding to each phase of the three-phase alternating current. Further, below the stator 52, a coil connecting portion 58 for supplying electric power to the coils of the electromagnets provided in the stator 52 is disposed. The electric motor 42 is provided with a rotational position sensor (not shown) that detects the rotational position of the rotor 56.

The ball screw device 44 includes a nut 60 that holds a large number of bearing balls on the inner peripheral portion, and a drive rod 62 formed with a male screw into which the bearing balls are fitted on the outer peripheral portion. The rod 62 is screwed with a bearing ball. The nut 60 is fitted to the inner peripheral portion of the lower portion of the motor shaft 54 so as not to be relatively rotatable. That is, the key 64 is provided on the outer peripheral portion of the nut 60, and the key 64 is fitted in the key groove formed on the inner peripheral portion of the motor shaft 54, and relative rotation between the motor shaft 54 and the nut 60 is prohibited. Has been.
Further, the ball screw device 44 is fixed to the lower end portion of the motor housing 50 and is extended toward the lower support 24 while being fixed to the lower end portion of the motor housing 50. And a cylindrical guide body 72 that guides in the approaching / separating direction. In the upper part of the cylindrical guide body 72, the lower part of the motor shaft 54 is rotatably held via a bearing. A plurality of guide grooves 74 extending in the approaching / separating direction are formed at equal intervals in the circumferential direction on the inner peripheral portion on the lower side of the cylindrical guide body 72. A key 76 attached to the outer peripheral portion of the slide member 70 is fitted in each of the guide grooves 74, and the rotation of the slide member 70 is prohibited and the movement in the approaching / separating direction is allowed. A fitting hole 78 in which a serration is formed is provided in the approaching / separating direction at the upper center portion of the slide member 70 and is fitted to the serration formed in the lower end portion of the drive rod 62. Therefore, the rotation of the drive rod 62 around the axis is prohibited by the slide member 70, and the drive rod 62 is driven in the axial direction, that is, the approaching / separating direction with the rotation of the nut 60.
In addition, the wheel side member 34 is fitted to the outer periphery of the cylindrical guide body 72 so as to be able to move relatively smoothly. When the approaching / separating force generating device 20 expands and contracts, the cylindrical guide body 72 and the wheel side member 34 are fitted. The member 34 is relatively moved.

An unsprung vibration reduction portion 80 is provided below the slide member 70. The unsprung vibration reduction portion 80 includes a shock absorber 82 fixed to the lower portion of the wheel side member 34. The shock absorber 82 is of a fluid resistance type, and includes a cylinder 84 filled with hydraulic oil, a piston disposed in the cylinder 84, a piston attached to one end, and a slide member 70 at the other end. And a piston rod 86 fixed to. The piston is provided with a resistance applying portion such as a throttle and an on-off valve, and the cylinder 84 and the piston rod are caused by the flow resistance when the hydraulic oil passes through the resistance applying portion when the piston moves in the cylinder 84. A damping force for relative movement with respect to 86 (and piston) is generated.
The lower support 24 is attached to the lower end portion of the cylinder 84, and the shock absorber 82 generates a resistance force to the relative movement between the slide member 70 and the lower support 24. Therefore, when the approaching / separating force is generated by the electromagnetic actuator 40, for example, when the wheel vibrates finely up and down due to road surface irregularities, the shock absorber 82 expands and contracts and generates a damping force. Unsprung vibration is reduced.
The unsprung vibration relaxation portion 80 includes a compression coil spring 90 disposed between the upper end surface of the cylinder 84 and the lower end surface of the slide member 70, and the piston rod 86 is lowered with respect to the cylinder 84. It is suppressed.

  In this embodiment, the approaching / separating force generator 20 as an electromagnetic coupling device is such that the “rod” held in the housing 30 so as to be movable in the axial direction is a wheel side coupling body via a shock absorber 82 as a vibration damping device. The lower support 24 is connected to the lower support 24. The “rod” is constituted by a drive rod 62, a slide member 70, and a piston rod 86. In addition, it can be considered that the “rod” is configured by adding the shock absorber 82 to the drive rod 62 or the like. In this case, the “rod” itself can be expanded and contracted to some extent.

  The electromagnetic actuator 40 is controlled by an electronic control unit, which will be described later, and generates an approaching / separating force corresponding to a traveling state, and increases / decreases a vehicle body support force that is a separating force of the entire approaching / separating force generating device 20. For example, a damping force that suppresses vertical vibration of the vehicle body is generated. Further, for example, in order to suppress the change in the posture of the vehicle body during turning, the one arranged on the turning outer wheel side generates a separating force to increase the vehicle body supporting force, and the one arranged on the turning inner wheel side has an approaching force. To reduce the vehicle support force. Furthermore, for example, when passing through a relatively large road surface bulge or depression, an approach force or a separation force is generated to change the vehicle body support force, thereby effectively absorbing vibration caused by input from the road surface.

FIG. 2 shows an enlarged view of the upper support 22.
In the present embodiment, the upper support 22 includes an upper support main body 100 (a connecting portion main body) that is attached to the suspension tower 14 that is a part of the vehicle body from below. The upper support body 100 includes a contact plate 110 (a kind of support) that contacts the suspension tower 14 and a mount rubber 112 that serves as an elastic connecting portion that elastically connects the contact plate 110 and the vehicle body side member 32. And. Further, the upper support 22 is provided with a plurality of stud bolts 114 (a kind of male screw member) that extend through the contact plate 110 to the vehicle body side.
The abutting plate 110 has an annular shape, and a flat plate portion 120 disposed so as to intersect with the motor shaft 54 (crossing at a right angle in this embodiment), and an outer periphery of the flat plate portion 120. And an outer peripheral wall part 122 provided to hang from the end. A hole 124 larger than the outer diameter of the motor housing 50 is formed in the flat plate portion 120, and the flat plate portion 120 has an inner peripheral portion that maintains a set interval over the entire outer periphery of the motor housing 50. It is arranged in the state.
The flat plate portion 120 is provided with a plurality of bolt holes 130 (three in the present embodiment) through which the stud bolts 114 penetrate in the approaching / separating direction at equal intervals in the circumferential direction. In addition, serrations for prohibiting the rotation of the stud bolt 114 are formed in the inner peripheral portion of each bolt hole 130.

  FIG. 3 shows a cross section of the stud bolt 114. Each of the plurality of stud bolts 114 (three in the present embodiment) includes a hollow shaft portion 132 having a hollow hole 136 in the axial direction, and a disk portion extending from the end of the hollow shaft portion 132 on the mount rubber 112 side to the outer periphery. 134. A male screw is formed on the outer peripheral portion of the hollow shaft portion 132 in the most part, and a serration 135 that fits with the serration on the inner peripheral portion of the bolt hole 130 is formed in a portion close to the disc portion 134. ing. In the vicinity of the distal end portion of the hollow shaft portion 132, the diameter of the hollow hole 136 is increased, and a fitting hole 138 into which a connector described later is fitted is formed. When the suspension device 10 is attached to the vehicle body, the stud bolt 114 is screwed into the nut 144 (see FIG. 1) in a state where the stud bolt 114 passes through the vehicle body through hole 142 provided in the suspension tower 14. The contact plate 110 is fastened.

The mount rubber 112 is made of synthetic rubber and has an annular shape. Further, the mount rubber 112 is joined to the contact plate 110 at the upper and outer peripheral portions thereof and to the upper surface of the vehicle body side member 32 at the lower and inner peripheral portions thereof by bonding or the like. In this way, the contact plate 110 and the vehicle body side member 32 are elastically connected by the mount rubber 112, and the approaching / separating force generating device 20 (specifically, the vehicle body side member 32) is relative to the suspension tower 14. Movement (relative movement in the approach / separation direction and the direction orthogonal to the direction) is allowed to some extent.
In the present embodiment, the wiring for supplying electric power to the electric motor 42 is disposed through the upper support 22, but the mount rubber 112 is provided with a through hole 150 for passing the wiring. ing. The wiring will be described in detail below.

FIG. 4 schematically shows power supply wiring to the electromagnetic actuator 40.
In a vehicle on which the suspension device 10 is mounted, an electronic control unit 200 (hereinafter abbreviated as “ECU 200”) that controls the output of the electromagnetic actuator 40, a battery 210 that is a battery, and a drive that supplies drive power to the electromagnetic actuator 40. An inverter 220 as a circuit is provided. In this figure, the coils corresponding to the three-phase AC phases (U, V, W) of the stator 52 of the electric motor 42 that is supplied with driving power are schematically shown.
The ECU 200 is mainly composed of a computer. An inverter 220 is connected to ECU 200, and driving power corresponding to a command from ECU 200 is supplied from inverter 220 to stator 52. The ECU 200 is connected with various sensors (not shown) such as a sprung acceleration sensor and a vehicle body-wheel distance sensor. Based on the detection results, the necessary driving according to the running state is performed. The power is determined.
The inverter 220 performs PWM (pulse-width modulation) by ON / OFF control of the six switching elements, generates pseudo three-phase alternating current from direct-current power supplied from the battery 210, and instructs The drive power corresponding to is supplied to each phase. In the state where the electric motor 42 and the battery 210 are connected via the inverter 220, when the electric motor 42 is forcibly rotated along with the expansion / contraction of the approach / separation force generator 20, the electric motor 42 The generated power may be stored in the battery 210 via the inverter 220 in some cases. An approaching / separating force is also generated when power is generated by the electric motor 42.

Three power supply side cords 222 (a kind of power supply line) corresponding to each phase of the three-phase alternating current are electrically connected to the inverter 220. A power supply side connector 224 is attached to the end portions of the three power supply side cords 222.
On the other hand, the stator 52 has three power supply path forming bodies 230 (a kind of conductive path forming bodies) that form conductive paths for supplying power corresponding to each phase of the three-phase alternating current via the coil connecting portion 58. Is electrically connected. Briefly described, the power supply path forming body 230 is such that conductors such as electric wires and connection terminals are electrically connected to each other to form a conductive path between the power cord 222 and the coil connection portion 58. It is. In the present embodiment, the three power supply path forming bodies 230 are separately arranged to be deformable. Therefore, when the three power supply path forming bodies 230 are arranged together, for example, the deformation is easy as compared with the case where the three electric wires are collected together by covering, and the arrangement is made. The degree of freedom increases.
A motor-side connector 232 (a kind of connection tool) is provided at each end portion of the three power supply path forming bodies 230. By connecting a power supply side connector 224 (a kind of connection tool) to the motor side connector 232, each power supply side cord 222 and each power supply path forming body 230 are electrically connected. The power supply side connector 224 and the motor side connector 232 will be described in detail later.

  Each power supply path forming body 230 includes a single cord 234 (a kind of single electric wire) in which a plurality of conductive strands are collected and insulated to form a single conductive wire, and the single cord 234 A parallel cord portion 238 (a kind of parallel small-diameter electric wire portion) in which a plurality of small-diameter cords 236 (a kind of small-diameter electric wire) having a similar structure and connected in parallel are arranged in series. . Each of the plurality of small-diameter cords 236 belonging to the parallel cord portion 238 is individually insulated and coated so that it can be individually deformed. That is, each power supply path forming body 230 is more easily deformed in the parallel cord portion 238 than in the single cord 234.

Returning to FIG. 2 and FIG. 3, the wiring for supplying electric power to the electric motor 42 will be described in detail.
In the present embodiment, the electric motor 42 is fixed to the vehicle body side member 32 that is the upper end portion of the housing 30 so as to penetrate the bottom surface thereof. The electric power is supplied to the electric motor 42 through a coil connecting portion 58 provided below the stator 52. That is, in the suspension device 10 of the present embodiment, in order to supply electric power to the electric motor 42, it is necessary to electrically connect the inverter 220 inside the vehicle body and the coil connection portion 58 inside the housing 30. At this time, in this embodiment, each power supply path forming body 230 is formed by the wall of the housing 30 (specifically, the bottom wall of the vehicle body side member 32), the mount rubber 112, the contact plate 110, the stud bolt 114, and The suspension tower 14 is disposed so as to penetrate therethrough. In such a structure, there are three problems. That is, (a) each power supply path forming body 230 is penetrated while maintaining airtightness in the housing 30, and (b) the suspension tower 14 and the vehicle body side member 32 connected via the mount rubber 112 as described above. Each power supply path forming body 230 can be easily deformed when the relative movement between the power supply path forming body 230 and (c) each power supply path forming body 230 and each power supply side cord 222 are easily connected. is there.

(a) In order to allow each power supply path forming body 230 to penetrate while maintaining airtightness in the housing 30, in this embodiment, the housing 30 is provided with an airtight holding connection portion 250 (FIG. 3). The airtight holding connecting portion 250 includes a wiring hole 252 provided in a portion corresponding to the stud bolt 114 of the vehicle body side member 32, and a connecting terminal with pin 254 that penetrates the wiring hole 252 (one of the power supply path forming body 230. And a seal member 256 that hermetically closes a gap between the wiring hole 252 and the pin-equipped connection terminal 254.
5 and 6 show a cross-section and a plan view of the connecting terminal with pin 254. FIG. The description in parentheses in the figure will be described later. The connection terminal with pin 254 is provided with a conductive pin 258 that extends through the wall surface of the vehicle body side member 32 and extends into the housing 30. The gap between the conductive pin 258 and the wiring hole 252 is hermetically sealed by the seal member 256. By closing, each electric power supply path formation body 230 can be penetrated, maintaining airtightness in the housing 30.

An upper portion of the cylindrical connection fitting 260 is fitted to the tip of the conductive pin 258 and is fixed by a fastening fitting 262. Further, the lower portion of the cylindrical connection fitting 260 is caulked in a state in which the distal end portion 264 of the single cord 234 is inserted, and the connection terminal with pin 254 and the single cord 234 are electrically connected. On the other hand, the base end portion 266 of the single cord 234 is inserted into a wiring hole 274 provided in the upper part of the cylindrical guide body 72 and connected to a coil connection portion 58 provided below the stator 52.
A power supply path branching portion 280 (a kind of conductive path branching tool) that branches the power supply path is provided at the base end portion of the connection terminal with pin 254. The power supply path branching portion 280 has a shape generally along an arc centered on the axis of the motor shaft 54, and the conductive pin 258 extends in the approaching / separating direction from the center. The power supply path branching portion 280 has three insertion holes 282 in the approaching / separating direction, and is fixed by caulking with one end portion of the small-diameter cord 236 inserted into each of the three insertion holes 282. And electrically connected to the small-diameter cord 236.
The power supply path branching portion 280 is disposed in a recess 284 (see FIG. 7) formed in the vehicle body side member 32. The seal member 256 is also disposed between the power supply path branching portion 280 and the wall surface of the vehicle body side member 32, and electrically insulates between the pin-equipped connection terminal 254 and the vehicle body side member 32. It also plays a role. Note that the power supply path branching unit 280 can also be referred to as a branching path aggregation unit that aggregates the branched power supply paths into one from the direction in which power is supplied.

(b) In order to easily deform each power supply path forming body 230 in accordance with the relative movement between the suspension tower 14 and the vehicle body side member 32, in this embodiment, the mount rubber 112 of each power supply path forming body 230 is The penetrating portion is the above-described parallel code portion 238.
FIG. 7 shows a view of the parallel cord portion 238 as viewed in the diameter direction of a circle centered on the axis of the drive rod 62. In the present embodiment, the plurality of small diameter cords 236 are three, and the total cross-sectional area of the plurality of conductive element wires included in the three small diameter cords 236 is the breakage of the plurality of conductive element wires of the single cord 234. It is equal to the total area. That is, the allowable current of the parallel cord unit 238 (which is a kind of allowable conduction power) and the allowable current of the single cord 234 are made equal. The allowable current of the parallel cord unit 238 and the single cord 234 is equal to the allowable current of the power supply path forming body 230. In this case, although heat dissipation is not considered, considering heat dissipation, the total of the cross-sectional areas of the plurality of conductive wires included in the three small-diameter cords 236 is calculated as the plurality of conductive wires of the single cord 234. It is also possible to make it smaller than the sum of the cross-sectional areas.
In the present embodiment, it is assumed that the “standard electric wire whose allowable conductive power is the same electric wire as the conductive path forming body” is an electric wire having the same material and thickness as the single cord 234. The “standard single electric wire” is assumed to be an electric wire having the same material and thickness as the single cord 234 and connecting two points connected by the parallel cord portion 238. In addition, the centerline S of a standard single electric wire is shown with a dashed-dotted line in the figure. The center line S of the standard single electric wire coincides with the center line of the parallel cord portion 238 itself.
The outer diameter of each small-diameter cord 236 is 60% or less of the single cord 234. That is, each small-diameter cord 236 has a maximum distortion of 60% or less of the standard single electric wire when deformed by the relative movement of the contact plate 110 and the vehicle body side member 32, and is easily deformed. The risk of disconnection due to deformation is relatively low. That is, the arrangement of the power supply path forming body 230 is facilitated by the parallel cord portion 238.
If the outer diameter of each small-diameter cord 236 is 75% or less of the single cord 234, the total cross-sectional area of the plurality of conductive wires included in the three small-diameter cords 236 is larger than that of the single cord 234. It may be enlarged. However, the smaller the outer diameter of each small-diameter cord 236, the easier the deformation. Also, the plurality of small diameter cords 236 may be two, or four or more.

Each small-diameter cord 236 of the parallel cord portion 238 has a lower end portion connected to the power supply path branching portion 280 of the pin-connected connecting terminal 254 described above. On the other hand, the upper end portion has the same structure as the pin-equipped connection terminal 254 in FIG. 5 and FIG. 6 described above, and has a long pin connection terminal 290 in which the conductive pin is lengthened (a part of the power supply path forming body 230 is configured. Is a member to be connected). In addition, the name and code | symbol of the connection terminal 290 with a long pin, etc. were described in the parenthesis. In FIG. 5, the connection terminal 290 with a long pin is upside down. In FIG. 6, the orientation of the viewpoint is a view of the connection terminal 290 with a long pin as viewed from above.
The connection terminal 290 with a long pin includes a power supply path branching part 291 (which is a kind of conductive path branching tool) configured similarly to the power supply path branching part 280 of the connection terminal 254 with a pin. The small diameter cords 236 are caulked in the holes 292, and the small diameter cords 236 are fixed and electrically connected.

In the present embodiment, the parallel cord portion 238 is configured to be deformed in advance so that each small-diameter cord 236 is spiral in the natural state. FIG. 8 shows a center line S of a standard single electric wire for the parallel cord portion 238. In the present embodiment, the length of the small-diameter cord 236 is 1.5 times or more that of a standard single electric wire. That is, each small-diameter cord 236 is thinner than the single cord 234 and deforms relatively easily, but further, the diameter is simply reduced by making each small-diameter cord 236 helical and loose. The deformation is made easier than that. Therefore, even if the mounting rubber 112 is elastically deformed by the traveling vibration of the vehicle and the contact plate 110 and the vehicle body side member 32 move relative to each other, it is easy to deform following the relative movement. Further, durability against repeated deformation is also improved, and the possibility that the electrical continuity of each power supply path branching portion 280 is interrupted is reduced.
Focusing on the spiral portion of the small-diameter cord 236, two points on the center line of the small-diameter cord 236 and points A and B sandwiching one rotation of the spiral are shown. Let C be the point where the distance between the straight line connecting the points A and B and the center line of the small-diameter cord 236 between the points A and B is the maximum value Wmax. In the present embodiment, the value obtained by dividing the maximum value Wmax by the length Z of the center line of the small diameter cord 236 between the points A and B (the length of the center line of the spiral portion) is 0.4 or more. .

(c) In order to easily connect each power supply path forming body 230 and each power supply side cord 222, in this embodiment, each power supply path forming body 230 has a structure that penetrates the hollow hole 136 of the stud bolt 114. The motor-side connector 232 is disposed at the tip of the stud bolt 114 (FIGS. 3, 7, and 9).
This will be specifically described. A long conductive pin 294 having a relatively long dimension is provided on the connection terminal 290 with a long pin. The long conductive pin 294 passes through the hollow hole 136 of the stud bolt 114 and extends a set amount toward the tip end side. It is said to be long. The long pin connection terminal 290 is covered with an insulating covering member 296, and the connection between the long pin connection terminal 290 and the stud bolt 114 or the vehicle body side member 32 is interrupted.
The hollow hole 136 of the stud bolt 114 is increased in diameter on the tip side to form the above-described insertion hole 138. A part of a pin-side holding case 300 (which is a kind of holding member) that has insulating properties and holds the long conductive pins 294 is fitted into the fitting hole 138. The pin-side holding case 300 has a generally cylindrical shape, and has a fixing portion 302 that is fitted and fixed in the fitting hole 138, and has a diameter larger than that of the fixing portion 302 and is fitted to the power-side connector 224. And a connecting portion 305 provided with a fitting recess 304.
The fixing portion 302 is divided into a plurality of portions in the circumferential direction, and is easy to move in the radial direction. A claw portion 306 having a sawtooth cross section is formed on the inner periphery of the tip of each divided portion. On the other hand, the insertion hole 138 is slightly tapered, and the diameter on the back side (base end side of the stud bolt 114) is smaller than the opening side (tip end side of the stud bolt 114). Therefore, the fixing portion 302 is compressed and deformed as the fixing portion 302 is inserted into the insertion hole 138, and the claw portion 306 bites into the covering member 296 that covers the long conductive pin 294, and the long conductive pin 294 and the covering member 296 move in the axial direction. Is prohibited. That is, the long conductive pin 294 is held by the pin side holding case 300.
The distal end portion of the long conductive pin 294 is not covered with the covering member 296 and constitutes a connection terminal (actuator side connection terminal) of the motor side connector 232. That is, the motor side connector 232 is configured by the long conductive pins 294 and the pin side holding case 300.

FIG. 9 shows a power supply side connector 224 connected to the motor side connector 232 described above.
The power supply side connector 224 includes a power supply side contact 310 (a kind of power supply side connection terminal) attached to the power supply side cord 222 and a power supply side holding case 312 (a kind of power supply side terminal holding part) for holding them. Including. The power supply side contact 310 has a generally cylindrical shape, and is swaged with the power supply side cord 222 inserted therein to hold the ring portion 314 and extends from the end of the ring portion 314 toward the motor side connector 232. A plurality of contact piece portions 316 (eight in the illustrated example). The plurality of contact piece portions 316 are formed side by side in the circumferential direction, and are in contact with the outer periphery of the long conductive pin 294 on the inner surface thereof. An annular rubber belt 318 is fitted on the outer peripheral portion of the plurality of contact piece portions 316, and the plurality of contact piece portions 316 are pressed against the outer periphery of the long conductive pin 294 by the rubber belt 318.

The power supply side holding case 312 has a generally cylindrical shape, and is configured to hold the end portion of the power supply side cord 222 and the power supply side contact 310 through the inside thereof. A portion on the power supply side cord 222 side of the power supply side holding case 312 has a small outer diameter, and a cord gripping portion 320 that grips the power supply side cord 222 is formed. The cord gripping portion 320 is formed with a male screw at the outer peripheral portion and an inwardly directed claw 322 at the tip portion. Further, the cord gripping portion 320 is divided into a plurality in the circumferential direction, and the claw 322 is easily moved in the radial direction.
Further, the power supply side connector 224 includes a throttle nut 324 that is screwed into the cord gripping portion 320 and squeezes the tip end portion inward. The inner diameter of the throttle nut 324 is reduced at the back side, that is, the part opposite to the power supply side holding case 312, and the throttle nut 324 is inserted in the state where the power supply side cord 222 is inserted into the cord gripping part 320. When screwed, the tip end portion of the cord gripping portion 320 is pushed inward so that the claw 322 grips the power source side cord 222.
A portion of the power supply side holding case 312 on the motor side connector 232 side is provided with a fitting cylinder portion 330 having a small outer diameter and inserted into the fitting recess 304 of the motor side connector 232. When the fitting tube portion 330 is inserted into the fitting recess 304, the plurality of contact piece portions 316 of the power supply side contact 310 are brought into contact with the outer periphery of the long conductive pin 294 to form a power supply path with the power supply side cord 222. The body 230 is electrically connected. That is, each power supply path forming body 230 and each power supply side cord 222 can be easily connected.

Further, in this embodiment, a fixing nut 340 for fixing the power supply side connector 224 is attached to the stud bolt 114 in order to make the connection between the power supply side connector 224 and the motor side connector 232 strong. In the present embodiment, the power supply side connector 224 and the fixing nut 340 are separate and independent components. For example, the power supply side connector 224 and the fixing nut 340 are integrally assembled or formed integrally. It can also be. The fixing nut 340 has a generally cylindrical shape, and a female screw 342 is formed on the inner peripheral portion on the motor side connector 232 side so as to be screwed with the stud bolt 114. On the other hand, the end portion on the power supply side cord 222 side is bent toward the inner peripheral side so as to be engaged with the outer peripheral portion of the power supply side holding case 312. Therefore, the power supply side connector 224 and the motor side connector 232 are sandwiched between the fixing nut 340 and the stud bolt 114 and fastened. The inner diameter of the end of the fixing nut 340 on the power supply side cord 222 side is larger than the outer diameter of the throttle nut 324.
In this embodiment, the fixing nut 340 as a fastener and the stud bolt 114 constitute a detachment prevention portion that prevents the connection between the power supply side connector 224 and the motor side connector 232 from being disconnected. The separation preventing portion can prevent the power supply side connector 224 from coming off even when a force for pulling it out is applied to the power supply side connector 224 due to vibration of the vehicle or the like.
The above-described detachment preventing portion can be configured not to use the stud bolt 114. However, the power supply side connector 224 can be easily fixed by attaching the motor side connector 232 to the tip end portion of the stud bolt 114 and screwing the fixing nut 340 as in this embodiment. That is, each power supply path forming body 230 and each power supply side cord 222 are securely connected.
With the configuration described above, the problems (a) to (c) are solved in the present suspension device 10. Further, the wiring for supplying electric power to the electromagnetic actuator 40 can be disposed relatively easily.

In this embodiment, the power supply path forming body 230, which is the “conductive path forming body”, includes a long-pin connection terminal 290, three small diameter cords 236, a pin connection terminal 254, a cylindrical connection fitting 260 and a single cord 234. It is constituted by. In the present embodiment, the parallel cord portion 238 is composed of three small-diameter cords 236.
Further, in the present embodiment, each of the “plural sets in which a plurality of conductive path forming bodies are divided” includes one power supply path forming body 230. Further, the “a plurality of conductive path penetration portions provided in the vehicle body side coupling body and penetrating each of the plurality of conductive path aggregates” are formed by the hollow hole 136 of the stud bolt 114 and the through hole 150 of the mount rubber 112. It is configured. In addition, the conductive path penetration part in a present Example is the aspect made into the through-hole (it is comprised by the hollow hole 136 and the through-hole 150), The electric power supply path formation body 230 which is a conduction path formation body in the through-hole As a result, the conductive path penetrates through the vehicle body side connector. Of the power supply path forming body 230, the connection terminal 290 with a long pin and the parallel cord portion 238 pass through the upper support main body 100 that is the connecting portion main body.
In the present embodiment, the “power source inside the vehicle body” is constituted by an inverter 220 and a battery 210. Further, in this embodiment, the upper support 22 is connected to the electric motor 42 in a state where the electric motor 42 which is a part of the electromagnetic coupling device penetrates the upper support main body 100, and the electric motor 42 of the upper support main body 100 is connected. The hole that penetrates the wire corresponds to the “connecting device through hole”. In this embodiment, no gap is provided between the electromagnetic coupling device and the coupling device through hole.

  In the present embodiment, the mount rubber 112 is provided with a through hole 150 larger than the parallel cord portion 238, and a gap is present between the mount rubber 112 and the small diameter cord 236. On the other hand, for example, when the mount rubber 112 is vulcanized, the mount rubber 112 and the small-diameter cord 236 can be brought into close contact with each other without any gap. In that case, it is desirable that the material covering the conductive wire of the small-diameter cord 236 is excellent in heat resistance such as, for example, fluorine rubber or silicone rubber.

In the present embodiment, the power supply path forming body 230 (specifically, the single cord 234) to the electric motor 42 is connected to the lower portion (specifically, the coil connecting portion 58) of the electric motor 42. On the other hand, although the aspect which connects an electric power supply path formation body to the upper surface of the electric motor 42 is recalled, when there is an obstacle above the electric motor 42, it is difficult to adopt this aspect. For example, the upper portion of the suspension device 10 is covered with a bonnet (sometimes called a hood panel), but when the gap between the upper portion of the electric motor 42 and the bonnet is small, a single cord 234 is formed on the upper surface of the electric motor 42. Is difficult to connect. In addition, the suspension apparatus 10 including the electromagnetic actuator 40 tends to have a long overall length, and it is often difficult to secure a sufficient space above the electric motor 42.
As another mode, a mode in which the single cord 234 is connected to the side surface of the electric motor 42 is also conceived. However, when the suspension device 10 is attached to the suspension tower 14, the vehicle body through hole 142 provided in the suspension tower 14. There is a problem that the single cord 234 easily interferes with the surrounding area. In order to solve the problem, measures such as expanding the vehicle body through-hole 142 are necessary, but there are many restrictions on strength and space, which are often not easy.
That is, the suspension device 10 is configured such that the power supply path forming body 230 is connected to the lower portion of the electric motor 42, and it is difficult to ensure a sufficient space above the electric motor 42, or the suspension tower. This is suitable for the case where it is difficult to expand the vehicle body through hole 142 provided in the vehicle 14. In the present embodiment, the power supply path forming body 230 is housed in the housing 30 and the end is fixed to the stud bolt 114. There is an advantage that there is less possibility that the power supply path forming body 230 will be moved or inappropriately deformed during storage, transportation, assembly and the like.

In the above embodiment, the connection between each cord such as the single cord 234 and the small diameter cord 236 and the connection terminal such as the connection terminal with the pin is made by caulking, but the connection other than caulking such as soldering and fastening. Means can also be used. Further, a plurality of caulking, soldering, fastening, and the like can be used in combination.
In the above embodiment, the electromagnetic actuator 40 and the vehicle body side member 32 are not allowed to move relative to each other. However, an elastic member is interposed between the electromagnetic actuator 40 and the vehicle body side member 32 to allow the relative movement to some extent. It can also be set as the aspect to do. In this aspect, an easily deformable conductive portion can be provided between the hermetic holding connection portion 250 and the coil connection portion 58. The easily deformable conductive portion can be the same as the parallel cord portion 238, for example, and the deformable easily conductive portion can be easily deformed due to relative movement between the electromagnetic actuator 40 and the vehicle body side member 32.

An embodiment different from the above will be described.
In the above-described embodiment, the easily deformable conductive portion is the parallel cord portion 238. However, a conductive rubber member that is “conductive rubber or the like” may be used.
FIG. 10 shows an upper support 410 of a suspension device in which the easily deformable conductive portion is a conductive rubber member 400. The configuration of the suspension device is substantially the same as that of the above embodiment except for the easily deformable conductive portion, and thus the description thereof is omitted.
The conductive rubber member 400 has a parallelogram shape in cross section, and as shown in FIG. 11, the upper and lower bottom surfaces are generally rectangular, and the two opposing sides thereof are slightly arcuate (generally drive rods). It has a shape that is curved in the shape of a circular arc centered on 62 axis. The conductive rubber member 400 is made of a synthetic rubber (for example, silicon rubber) mixed with conductive carbon, metal powder, and short fibers, and the allowable current is the same as that of the single cord 234.
FIG. 12 shows a connection terminal 420 with a pin. The connection terminal with pin 420 includes a conductive pin 258 similar to that described above, and a conductive plate 422 having the same shape as the bottom surface of the conductive rubber member 400 provided at the base end of the conductive pin 258. In addition, in this figure, the code | symbol and name of the connection terminal 430 with a long pin are shown in a parenthesis. Similarly, the connection terminal 430 with a long pin includes the above-described long conductive pin 294 and a conductive plate 422 having the same shape as the bottom surface of the conductive rubber member 400 provided at the base end of the long conductive pin 294. The connection terminal with pin 420 and the connection terminal with long pin 430 are such that the surfaces of the respective conductive plates 422 are brought into close contact with the bottom surface of the conductive rubber member 400 to cause electrical conduction with the conductive rubber member 400. ing.
The conductive rubber member 400 has an amount of elastic deformation in the approaching / separating direction that is at least three times that of a standard single electric wire. In addition, the conductive rubber member 400 has a relative movement amount of three times or more that of a standard single electric wire when the same force that relatively moves the two end portions in contact with the upper and lower conductive plates 422 in the approaching / separating direction is applied. Has been. Although the standard single electric wire is not shown in the figure, it is an electric wire having the same material (conductive material or the like) as the single cord 234 and having the same thickness as the central line S shown in FIG. Is assumed. Further, the amount of elastic deformation of the conductive rubber member 400 is the same as or more than that of the mount rubber 112.
As described above, the portion of the conductive path forming body that penetrates the mount rubber 112 is the conductive rubber member 400 that is easily elastically deformed, so that the relative movement between the contact plate 110 and the vehicle body side member 32 is easily allowed. Moreover, the possibility that the electrical conduction of the conductive path forming body is interrupted by the relative movement can be reduced.

Another embodiment different from the above will be described.
In the above embodiment, the easily deformable conductive portion is the parallel small-diameter electric wire portion (parallel cord portion 238). However, it can be a curved electric wire portion in which the single cord 234 that is a standard electric wire is curved. FIG. 12 shows an upper support 502 provided with a curved electric wire portion 500 (which is a kind of a bent portion). In the present embodiment, the same components as those of the upper support 22 are denoted by the same reference numerals and description thereof is omitted. Note that the thickness of the upper support 502 in the approaching / separating direction of the mount rubber is twice that of the above embodiment.
In this embodiment, the electric wire constituting the curved electric wire portion 500 is a bare electric wire 510 having no insulation coating, and a conductive wire similar to the single cord 234 is used. By using the bare electric wire 510, deformation is easier than that with a coating. The bare electric wire 510 is covered with an insulating rubber covering member 506 to insulate the bare electric wire.
The bent electric wire portion 500 is formed by bending the bare electric wire 510 three times, and has a folded shape including three bent portions 512. The curved electric wire portion 500 is generally disposed along the circumferential direction of a circle centered on the motor shaft 54 and is suitable when the radial dimension of the upper support 512 is small.

This figure shows a center line 520 (dashed line) of the curved electric wire portion 500 itself. In the present embodiment, the curved electric wire portion 500 is constituted by a portion having a point A of the bare electric wire 510 as a start point and a point D as an end point via points C and B. The length of the bare electric wire 510 (between AD) of the curved electric wire portion 500 is set to be twice or more the length L of the center line 520.
Further, in the curved electric wire unit 500, the relative movement amount when the same force that moves relative to each other in the approaching / separating direction between the two set ADs is applied is three times or more that of the standard single electric wire passing through the center line 520. It is said that. Furthermore, the amount of elastic deformation of the curved electric wire portion 500 in the approaching / separating direction between the ADs is three or more times that of the standard single electric wire. In the present embodiment, the standard single electric wire is assumed to be an electric wire having the same material and thickness as the bare electric wire 510 and linearly connecting the ADs.
The curved electric wire portion 500 includes 1.5 S-shaped portions that are one unit of folding. When attention is paid to the S-shaped portion 522 (between AB) including the one on the stud bolt 114 side and the center of the three curved portions 512, the center line of the S-shaped portion 522 itself and the center of the bare wire 510 A value obtained by dividing the maximum value Wmax of the separation distance from the line by the length Z (distance between points A and B) of the center line of the S-shaped portion 522 itself is 0.5 or more.
As described above, the curved electric wire portion 500 can be easily deformed with the relative movement between the contact plate 110 and the vehicle body side member 32, and the electric conduction of the power supply path forming body 230 is reduced. The risk of interruption is reduced. That is, wiring to the electromagnetic actuator 40 becomes easy.

  In the present embodiment, the mount rubber 112 and the curved electric wire portion 500 can be in close contact with each other. In this aspect, when the insulation of the mount rubber 112 is sufficient, the bare wire 510 can be left as it is, and when the insulation is insufficient, the bare wire 510 is made resistant to heat such as fluorine rubber or silicone rubber. It is desirable to change to a covered electric wire that is insulated with an excellent member.

In the embodiment, the insertion holes 282 and 292 in the approaching / separating direction are provided in the power supply path branching portion 280 of the connection terminal with pin 254 and the power supply path branching section 291 of the connection terminal with long pin 290. On the other hand, in this embodiment, the insertion holes 534 of the connection terminal with pin 530 and the connection terminal with long pin 532 are provided in a direction intersecting with the approaching / separating direction (a direction orthogonal in the present embodiment).
14 and 15 show a view of the pin-equipped connection terminal 530 viewed from the circumferential direction of a circle centered on the motor shaft 54 and a view viewed from the lower side. In addition, since the connection terminal 532 with a long pin has the same shape (the conductive pin 258 is a long conductive pin 294), the reference numeral is given in parentheses. The connecting terminal with pin 530 is provided with a conductive pin 258 and an intersecting hole forming portion 540 as an intersecting direction connecting portion. The intersecting hole forming portion 540 has a cylindrical shape, and the conductive pins 258 and 292 extend from the outer peripheral portion of the intersecting hole forming portion 540 in a direction intersecting the axis thereof. Moreover, the cross hole formation part 540 is arrange | positioned in the direction in which the axis line follows a circumferential direction.
As described above, the insertion hole 534 is arranged in a direction intersecting the approaching / separating direction, so that there is an advantage that it is easy to take a long wiring route even when the separation distance between both ends of the curved electric wire portion 500 is relatively small. Further, by making the wiring path longer, the deformation accompanying the relative movement between the contact plate 110 and the vehicle body side member 32 is facilitated. In addition, the connecting terminal with pin 254 and the bare wire 510 are connected by, for example, caulking the cross hole forming portion 540 in a state where the end of the bare wire 510 is inserted into the insertion hole 534.

It is a figure which shows the suspension apparatus which is an Example of claimable invention. It is a figure which shows the upper support of the said suspension apparatus. It is a figure which shows the stud bolt provided in the said upper support. It is a figure which shows typically the wiring which supplies electric power to the electromagnetic actuator (stator) of the said suspension apparatus. It is a figure which shows the connecting terminal with a pin provided in the said upper support. It is a figure which shows the electric power supply path branch part of the said connection terminal with a pin. It is a figure which shows the parallel code part provided in the said upper support. It is a figure which shows typically the centerline etc. of the standard single electric wire of the said parallel cord part. It is a figure which shows the power supply side connector and the motor side connector in the said suspension apparatus. In the Example different from the above, it is a figure which shows the cross section of an upper support. It is a figure which shows the conductive rubber member provided in the said upper support. In the said Example, it is a figure which shows the electrically conductive board of a connecting terminal with a pin. In another Example different from the above, it is a figure which shows the cross section of an upper support. It is a side view of the connecting terminal with a pin provided in the upper support. It is a top view of the said connecting terminal with a pin.

Explanation of symbols

  10: Suspension device 14: Suspension tower (part of the vehicle body) 20: Approaching / separating force generator (electromagnetic coupling device) 22: Upper support (vehicle body side coupling portion) 24: Lower support (wheel side coupling portion) 40: Electromagnetic actuator 42: Electric motor 44: Ball screw device (motion conversion device) 52: Stator 54: Motor shaft 56: Rotor 58: Coil connection part 62: Drive rod 80: Unsprung vibration mitigation part 82: Shock absorber 90: Compression coil spring ( Spring: 100: Upper support body (connecting body) 110: Contact plate (support) 112: Mount rubber (elastic member) 114: Stud bolt (male screw member) 142: Vehicle body through hole 150: Through hole 200: ECU ( Electronic control unit) 20: Inverter 222: Power supply side cord (power supply line) 224: Power supply side connector (connector) 230: Power supply path forming body (conductive path forming body) 232: Motor side connector (connector) 234: Single cord (single 236: Small-diameter cord (small-diameter electric wire) 238: Parallel cord portion (parallel small-diameter electric wire portion) 254: Connection terminal with pin (connection terminal) 258: Conductive pin 270: Wiring hole [cylindrical guide body] 280: Power supply Road branching part 290: Connection terminal with long pin (connection terminal) 291: Power supply path branching part 294: Long conductive pin 300: Motor side holding case (terminal holding member) 310: Power supply side contact (power supply side connection terminal) 312: Power supply Side holding case (terminal holding part) <Modification 1> 400: Conductive rubber member 410: Upper 420: Connection terminal with pin 422: Conductive plate 430: Connection terminal with long pin <Modification 2> 500: Curved wire portion 502: Upper support (vehicle body side connection portion) 510: Bare wire 512: Curved part 520: Center line 522: S-shaped part 530: Connection terminal with pin 532: Connection terminal with long pin 540: Cross hole forming part A, B, C, D: Point Wmax: Maximum distance Z: Spiral part, S The length of the center line of the shape part

Claims (9)

A wheel side connector connected to the wheel holding portion;
A vehicle body side connected body connected to a part of the vehicle body;
An electromagnetic coupling device that includes an electromagnetic actuator, connects the wheel-side coupling body and the vehicle body-side coupling body so as to be capable of approaching and separating, and generates a force in a direction in which the electromagnetic actuator approaches and separates them;
A plurality of conductive path forming bodies for forming a conductive path for guiding electric power supplied from a power source inside the vehicle body to the electromagnetic actuator;
A plurality of conductive path penetrating portions provided through the vehicle body side coupling body and penetrating one or more corresponding ones of the plurality of conductive path forming bodies;
The plurality of conductive path forming bodies are divided into a plurality of sets corresponding to the plurality of conductive path penetrating portions, and the plurality of sets can be deformed separately from each other in at least a part of the wiring paths. There is provided a vehicle suspension device.   Each of the plurality of conductive path forming bodies includes an actuator side connection terminal connected to a corresponding one of a plurality of power supply side connection terminals electrically connected to a power source inside the vehicle body, and the plurality of conductive paths 2. The vehicle suspension device according to claim 1, wherein each of the penetrating portions includes a terminal holding portion that holds the actuator-side connection terminal of each of the one or more conductive path forming bodies corresponding thereto. The vehicle body side coupling body is a plurality of male screw members projecting toward the vehicle body side and penetrating a part of the vehicle body, each having an axial through hole, and at least a part of each of the plurality of conductive path through portions. Including what it forms,
Each of the plurality of conductive path forming bodies includes an actuator side connection terminal connected to a power supply side connection terminal electrically connected to a power supply inside the vehicle body,
3. The vehicle suspension device according to claim 1, wherein each of the plurality of conductive path penetrating portions includes a terminal holding portion that is provided in each of the plurality of male screw members and holds the actuator-side connection terminal. The vehicle body side coupling body includes a support body that supports a part of the vehicle body, and an elastic coupling portion that is formed of rubber or the like and interposed between the support body and the electromagnetic coupling device,
4. The vehicle suspension device according to claim 1, wherein each of the plurality of conductive path penetration portions penetrates the support body and the elastic connection portion. 5.   Each of the plurality of conductive path forming bodies includes an easily deformable conductive portion connecting two set points, and each of the easily deformable conductive portions is one electric wire connecting the two points, and the electric wire It is easier to deform than assuming a standard single wire where the center line of each line matches the center line of each easily deformable conductive part and the allowable conductive power is the same as the allowable conductive power of each easily deformable conductive part. Compared with the standard single wire, (a) the relative movement amount of the two points is 1.5 times or more when the same force is applied to move the two points closer to or away from each other. And (b) the amount of elastic deformation of the two points in the approaching / separating direction is 1.5 times or more, and (c) the maximum strain generated when the two points are approaching or separating from each other. It should be at least one of 75% or less Vehicle suspension device according to any one of Motomeko 1-4.   The vehicle according to claim 5, wherein the easily deformable conductive portion includes a parallel small-diameter electric wire portion wired in parallel with each other in a state where each of a plurality of small-diameter electric wires having a diameter smaller than that of the standard single electric wire can be separately deformed. Suspension device. The easily deformable conductive portion includes a folded portion provided with one or more S-shaped portions formed by bending a single electric wire equivalent to the standard single electric wire a plurality of times,
Each of the one or more S-shaped parts has a maximum distance between the center line of the S-shaped part itself and the center line of the electric wire constituting the S-shaped part, and the length of the center line of the S-shaped part itself. The vehicle suspension apparatus according to claim 5 or 6, wherein the value divided by is not less than 0.3.   8. The vehicle suspension device according to claim 5, wherein the easily deformable conductive portion includes a spiral portion in which one electric wire equivalent to the standard single electric wire is spirally wound one or more times. Each of the plurality of conductive path penetration portions includes at least an elastic connection portion through-hole penetrating the elastic connection portion,
The vehicle suspension device according to any one of claims 5 to 8, wherein the easily deformable conductive portion is disposed in a state of penetrating the elastic connecting portion through hole.

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