JP2009035181A - Part mounting unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting unit capable of mounting an inverter without suppressing crushing of a side member. <P>SOLUTION: The inverter mounting unit 20 for mounting the inverter 14 to the side member 18 is broadly classified to a placement part placed with the inverter 14; and a support part for supporting the placement part. The placement part is constituted by a pair of F shape pipe members 22f, 22r. A connection part 28f of the front side F shape pipe member 22f is inserted to a connection part 28r of the rear side F shape pipe member 22r, and both F shape pipe members 22f, 22r become slidable in a crushing direction. A straight pin 30 penetrated through both F shape pipe members 22f, 22r so as to suppress the slide movement is destroyed by impact force at generation of head-on collision and allows the slide movement. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a component fixture for attaching an electronic component, for example, an inverter, to a vehicle skeleton member that functions as an impact absorber that absorbs an impact by being crushed in the collapse direction when an impact in a predetermined collapse direction is applied. About.

  As is well known, various electronic components such as an inverter and a battery are mounted on the vehicle. Some vehicles have such electronic components attached to a vehicle skeleton member that forms a skeleton of the vehicle (for example, Patent Documents 1 to 3 below). When attaching an electronic component to a vehicle frame member, a dedicated bracket (attachment) is usually used.

  FIG. 7 is a diagram showing a state in which the inverter 100 is attached in the vicinity of the front end of the side member 102 that is a vehicle skeleton member arranged on the side of the vehicle in the hybrid vehicle. In this case, the inverter 100 is attached to the side member 102 via a dedicated bracket 104. The bracket 104 includes a flat tray 106 on which the inverter 100 is placed, a stay 110 that supports the tray 106, an L-shaped metal fitting 108 that connects the stay 110 and the side member 102, and the like. Each member constituting the bracket 104 is a sheet metal member formed by bending a flat plate and has a sufficient length in the vehicle front-rear direction (that is, the longitudinal direction of the side member).

Japanese Patent Laid-Open No. 9-272459 JP 2006-121825 A JP 2005-262894 A

  When the inverter 100 is attached to the side member 102 using such a bracket 104, there is a problem that the collision absorbing ability is lowered. That is, the side member 102 functions as an impact absorbing member that absorbs an impact received by the vehicle at the time of a collision (normal collision) by being crushed in the front-rear direction. When the bracket 104 having a sufficient length in the front-rear direction (collapse direction) as shown in FIG. 7, in other words, the bracket 104 having high rigidity in the front-rear direction, is attached to the side member 102. Due to the rigidity, the crushing amount of the side member 102 at the time of collision is reduced. As a result, there is a problem that the impact cannot be sufficiently absorbed and it is difficult to secure the vehicle interior space.

  Therefore, an object of the present invention is to provide a component attachment that attaches an electronic component to the vehicle skeleton member without reducing the shock absorbing ability of the vehicle skeleton member.

  The component fixture of the present invention is a component fixture that attaches an electronic component to a vehicle skeleton member that functions as an impact absorber that absorbs an impact by being crushed in the collapse direction when an impact in a predetermined collapse direction is applied. And connecting a mounting portion that extends in a horizontal direction from the vehicle skeleton member to form a mounting surface on which the electronic component is mounted, and a vehicle skeleton member and the bottom surface of the mounting portion. A support portion that supports the placement portion, wherein the placement portion is a stretchable member that is stretchable in the crushing direction, and an inhibiting member that inhibits expansion and contraction of the stretchable member, and is in a certain crushing direction or more. An inhibition member that releases the inhibition by the addition of the force.

  In a preferred aspect, the expansion and contraction member includes a pair of slide members that are slidable in the collapse direction, and expands and contracts in the collapse direction by the sliding movement of the pair of slide members, and the inhibition member is the pair of slides. It is a pin member that inhibits the sliding movement of the pair of slide members by being penetrated by the member, and is a pin member that is destroyed by applying a force in a crushing direction above a certain level. In this case, it is desirable that the pair of slide members include a first pipe member and a second pipe member having a diameter smaller than that of the first pipe member and a part of which is inserted into the first pipe member.

  In another preferred aspect, the expansion / contraction member includes a pair of arm members that are rotatably connected to each other by a connection member, and expands and contracts in a crushing direction by the rotation of the pair of arm members, and the inhibition member Is a male screw member screwed into the pair of arm members as the connecting member.

  Another component mounting tool according to the present invention is a component mounting electronic component to a vehicle skeleton member that functions as an impact absorber that absorbs an impact by being crushed in the collapse direction when an impact in a predetermined collapse direction is applied. A mounting portion that extends in a horizontal direction from an upper surface of the vehicle skeleton member to form a mounting surface on which the electronic component is mounted; a side surface of the vehicle skeleton member; and a bottom surface of the mounting portion. And a support part that supports the placement part, wherein the placement part is a pair of projecting members that project from the vehicle skeleton member in a cantilever shape, A pair of overhanging members arranged at intervals, and a connecting member extending in the crushing direction to connect the pair of overhanging members, wherein a plurality of irregularities are formed on the surface of the connecting member. And.

  In each of the component fittings according to the two inventions described above, the support portion has a front support member connected in the vicinity of the front end of the mounting surface, and a gap in the crushing direction with respect to the front support member. It is desirable to provide a rear support member that is disposed and connected to the vicinity of the rear end of the mounting portion.

  According to the present invention, since the mounting portion has a telescopic member or a beat-shaped connecting member that can be stretched and contracted, it can be reduced and deformed in conjunction with the collapse of the vehicle skeleton member. As a result, it is possible to attach the electronic component to the vehicle skeleton member without lowering the shock absorbing ability of the vehicle skeleton member.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a preferred embodiment of a vehicle 10 according to the present invention, and FIG. 1 is an overall schematic view thereof.

  The vehicle 10 uses a motor 12 as a power source. For example, an electric vehicle driven by a motor and a hybrid vehicle using a motor and an engine (not shown) are typical examples. The vehicle 10 that uses the motor 12 is provided with an inverter 14 that supplies a drive signal to the motor 12. This inverter 14 is usually fixedly installed in front of the vehicle, more specifically, near the front end of a side member (not shown in FIG. 1). The side member is a vehicle skeleton member that extends in the front-rear direction of the vehicle and forms a skeleton of the vehicle. The inverter 14 is fixedly installed in the vicinity of the front end of the side member via a dedicated fixture.

  Here, the side member not only forms a skeleton of the vehicle, but also functions as an impact absorber that absorbs an impact received during a collision from the front of the vehicle (hereinafter referred to as “normal collision”). That is, when receiving an impact from the front of the vehicle, the side member is crushed in the longitudinal direction of the vehicle, thereby absorbing the impact and reducing the impact force transmitted to the passenger's riding space. In other words, in order to reduce the impact force transmitted to the boarding space, the side member needs to be sufficiently crushed in the vehicle front-rear direction.

  In this embodiment, in order to attach the inverter 14 to the side member without hindering the side member from being crushed in the front-rear direction and thus absorbing the shock by the side member, the configuration of the inverter mounting tool is made unique. This will be described below with reference to FIG.

  FIG. 2 is a perspective view of the inverter fixture 20 in the present embodiment. The inverter fixture 20 is a frame structure configured by combining a plurality of highly rigid pipe materials, for example, pipe materials made of steel, and supports the placement portion on which the inverter 14 is placed and the placement portion. And a support portion to be roughly divided. The inverter 14 is placed on the placement portion and fixed by connection pins (not shown).

  The mounting portion includes two F-shaped pipe members, that is, a front-side F-shaped pipe member 22f and a rear-side F-shaped pipe member 22r (hereinafter, the alphabet in the reference numerals is omitted if the front side and the rear side are not distinguished). The same applies to other members). Each of the F-shaped pipe members 22 has a substantially F shape when viewed from the top, and is formed by connecting another pipe material to a pipe material bent into a substantially L shape by connection means such as welding. The From another point of view, each F-shaped pipe member 22 has a projecting portion 26 that projects in a cantilever shape from the upper surface of the side member 18, and a longitudinal direction (side surface) of the side member 18 from the projecting portion 26. It is comprised from the two connection parts 28 extended in the crushing direction of the member 18, the arrow X direction in FIG. The base end of the overhang portion 26 is screwed to the upper surface of the side member 18. For this screw connection, the base end of the overhang portion 26 is flattened and a through hole for inserting a bolt is formed. In addition, a pin hole through which a straight pin 30 described later is inserted is formed at the tip of each connecting portion 28 (the end on the side away from the protruding portion 26). Furthermore, a plurality of connection holes 34 through which connection pins (not shown) for fixing the inverter 14 are inserted are formed in the F-shaped pipe member 22.

  Here, the front F-shaped pipe member 22f disposed on the front side is formed of a pipe material having a smaller diameter than the rear F-shaped pipe member 22r disposed on the rear side. The front end of the connecting portion 28f (hereinafter referred to as “front connecting portion 28f”) of the front F-shaped pipe member 22f made of this small-diameter pipe material is connected to the connecting portion 28r (hereinafter referred to as “rear side connecting”) of the rear F-shaped pipe member 22r. Part 28r "). Thereby, as a whole mounting part, it takes a form like a substantially rectangular frame structure.

  The front connection portion 28f inserted into the rear connection portion 28r can slide along the rear connection portion 28r, in other words, in the direction in which the side member 18 is crushed. By this sliding movement, the placement unit expands and contracts in the crushing direction. That is, the two F-shaped pipe members 22f and 28r function as expansion / contraction members that can expand and contract in the crushing direction.

  However, as a matter of course, if the crushing direction width of the mounting portion is changed at any time, the inverter 14 cannot be stably held in the mounting portion. Therefore, in the present embodiment, the base end of the overhanging portion 26 of the F-shaped pipe member 22 is fixed to the upper surface of the side member 18 by screwing, and the change in the distance between the two F-shaped pipe members 22f and 28r is hindered. ing. Further, the straight pin 30 is inserted into the overlapping portion between the front side connecting portion 28f and the rear side connecting portion 28r, which is generated by inserting the front side connecting portion 28f into the rear side connecting portion 28r.

  The straight pin 30 is a pin that is inserted through a pin hole formed at the tip of the connecting portion 28 and penetrates both the front connecting portion 28f and the rear connecting portion 28r in the radial direction. By providing the straight pin 30, the movement of both the connecting portions 28 f and 28 f in the crushing direction, and the expansion and contraction of the mounting portion in the crushing direction are inhibited. However, the straight pin 30 is configured to be broken when a force in a crushing direction of a certain level or more is applied, and to allow the movement of both the connecting portions 28f and 28f in the crushing direction. Here, the force above a certain level is a force that is expected to be generated when the side member 18 is crushed in the crushing direction at the time of a normal vehicle collision.

  That is, when the side member 18 to which the base end of the overhanging portion 26 is fixed is collapsed in the collapse direction due to the normal collision of the vehicle, naturally, the two F-shaped pipe members 22f and 28b are in a direction approaching each other (collapse). Try to move in the direction). Due to the movement of the F-shaped pipe member 22, the straight pin 30 simultaneously receives a force in the collapse direction from the front connection portion 28f and a force in the collapse direction from the rear connection portion 28r. The straight pin 30 has such a rigidity that it can be broken by the force in the direction opposite to the crushing direction simultaneously received from both the connecting portions 28. By adopting such a configuration as the straight pin 30, it is allowed to expand and contract in the crushing direction of the mounting portion at the time of a normal collision of the vehicle.

  As is clear from the above description, the mounting portion has sufficient rigidity at normal times, but at the time of a normal collision, the straight pin 30 is damaged by the impact force generated by the normal collision, and the expansion and contraction in the crushing direction is performed. Permissible. In other words, the placing portion has a configuration in which the rigidity in the crushing direction is reduced at a stretch in the event of a normal collision. And since the rigidity of the crushing direction of a mounting part falls, the side member 18 connected with the said mounting part can be crushed easily, and it can fully absorb an impact force.

  The support portion that supports the placement portion also has a configuration that does not hinder the crushing operation of the side member 18. The support portion is roughly classified into a front support member 24f connected to the vicinity of the front end of the placement portion and a rear support member 24r connected to the vicinity of the rear end of the placement portion. The front support member 24f and the rear support member 24r have substantially the same configuration, and are arranged at an interval in the crushing direction. Each support member 24 includes an L-shaped metal fitting 36 screwed to the side surface of the side member 18, and a support pipe 38 that connects the L-shaped metal fitting 36 and the placement portion. The L-shaped metal fitting 36 is formed by bending a substantially flat metal plate into an L shape, and is screwed to the side surface of the side member 18. A support pipe 38 is screwed to the upper surface of the L-shaped metal fitting 36. One end of the support pipe 38 is screwed to the L-shaped metal fitting 36 and is flattened for this screw connection. The other end of the support pipe 38 is welded to the protruding portion 26 of the F-shaped pipe member 22 and supports the F-shaped pipe member 22 from below. The heavy inverter 14 can be reliably held by the inverter fixture 20 by the support by the support pipe 38.

  Here, as described above, the front support member 24f and the rear support member 24r are arranged at intervals in the collapse direction, and there is no member that is long in the collapse direction. Therefore, even if the front side support member 24f and the rear side support member 24r are provided, the crushing operation of the side member 18 in the crushing direction is not hindered. As a result, at the time of a normal collision, the side member 18 can sufficiently absorb the impact force by being crushed in the crushing direction.

  Next, the operation of the inverter fixture 20 will be briefly described. The inverter 14 is mounted on a mounting portion composed of two F-shaped pipe members 22f and 28r, and is fixed to the mounting portion with a connection pin. In the present embodiment, the inverter 14 is fixed to the mounting portion with the connection pin, but it is needless to say that the inverter 14 may be fixed by other fixing means such as screwing. However, as will be described in detail later, it is desirable that the inverter 14 and the inverter fixture 20 be easily separated at the time of a collision, and in order to realize the separation, the inverter 14 is inserted into the connection pin, in particular, the connecting portion 28. It is desirable to be fixed to the mounting portion with a connection pin having rigidity equivalent to that of the straight pin 30 to be provided.

  By mounting and fixing the inverter 14 on the mounting portion, a vertical load is applied to the mounting portion due to the weight of the inverter 14. However, since the mounting portion is made of a highly rigid pipe material and is reliably supported from below by the support pipe 38 and the L-shaped metal fitting 36, it has high rigidity in the vertical direction. Yes. Therefore, even if the inverter 14 is mounted, the mounting portion can be reliably held without being bent.

  On the other hand, when the vehicle collides forward and an impact in the crushing direction is applied to the side member 18, the two F-shaped pipe members 22f and 28r constituting the placement portion move in a direction approaching each other by the impact force. try to. With the movement of the F-shaped pipe members 22f and 28r, an excessive load is applied to the straight pins 30 connecting the F-shaped pipe members 22f and 28r, and the straight pins 30 are destroyed. Then, when the straight pin 30 is broken, sliding movement of both the F-shaped pipe members 22f and 28r in the crushing direction is allowed. As a result, the side member 18 can be easily crushed without receiving resistance by the inverter fixture 20, and can absorb the impact force.

  At this time, the inverter 14 placed on the placement portion does not expand and contract. Therefore, if the inverter 14 and the mounting portion are firmly connected, the rigidity of the inverter 14 prevents the mounting portion from expanding and contracting, and thus the side member 18 is not crushed. Therefore, the connection pin for fixing the inverter 14 to the mounting portion is as rigid as the straight pin 30 inserted through the connecting portion 28 so that the inverter 14 and the inverter mounting tool 20 can be easily separated at the time of a collision. It is desirable to provide. If the connection pin is configured as described above, the connection pin is destroyed at the time of a collision, and the inverter 14 and the mounting portion are separated. As a result, it is possible to realize expansion and contraction of the placement portion, and thus sufficient collapse of the side member 18.

  As is clear from the above description, in the present embodiment, among the constituent members of the inverter fixture 20, a member that must be elongated in the crushing direction, specifically, a mounting portion (more precisely, a mounting portion). The connecting portion 28) constituting the mounting portion can be expanded and contracted in the crushing direction, and the expansion and contraction is inhibited by the straight pin 30 that is broken by the impact force that is received at the time of a normal collision. Therefore, at the time of a normal collision, the straight pin 30 is broken and the reduction of the connecting portion 28 in the crushing direction is allowed, and the crushing of the side member 18 is not hindered. Thus, the impact force can be sufficiently absorbed, and the transmission of the impact force to the passenger's riding space can be reduced.

  In addition, the structure of the inverter fixture 20 demonstrated above is an example, and the mounting part in which the inverter 14 is mounted is provided with an expansion / contraction member that can expand and contract in the crushing direction and an inhibition member that inhibits the expansion and contraction. Other configurations may be used as long as they are provided.

  For example, as illustrated in FIG. 3, the mounting portion can be slidably moved toward the other side by two flat plate members 42f and 42r, and a pair of projecting members 40f and 40r that support the flat plate members 42f and 42r. , And the straight pin 30 that inhibits the sliding movement of the flat plate member 42. In this case, the pair of flat plate members 42f and 42r are arranged such that the tip portions thereof overlap vertically. Then, the straight pin 30 is passed through the overlapping portion, thereby inhibiting the sliding movement of the pair of flat plate members 42f and 42r. If the straight pin 30 is rigid enough to be destroyed by applying a force in the crushing direction of a certain level or more, the straight pin 30 is destroyed at the time of a normal collision, and the pair of flat plate members 42f and 42r in the crushing direction. Slides are allowed. As a result, similarly to the above-described embodiment, the side member 18 can be easily crushed at the time of a normal collision, and can sufficiently absorb an impact.

  In this case, it is desirable that the pin hole formed in the flat plate member 42 has a shape in which a concentrated load is easily applied to the straight pin 30. Specifically, as shown in FIG. 4A, a step is provided in the pin hole, or a taper is provided in the pin hole as shown in FIG. It is desirable to reduce the contact area with the.

  In addition, the above-described two types of inverter attachments 20 are both placed by sliding and moving a pair of members (F-shaped pipe member 22 or flat plate member 42) arranged side by side in the collapse direction. The expansion and contraction of the part is realized. However, as long as the width in the crushing direction can be changed, the mounting portion may be expanded and contracted by movement other than sliding movement, for example, rotation.

  Specifically, as shown in FIG. 5, a pair of projecting members 40f and 40r projecting from the upper surface of the side member 18 are connected by a pair of arm members 44f and 44r whose posture (angle) can be changed. May be. In this case, one end of each arm member 44 is screwed to the projecting member 40 and the other end is screwed to the mating arm member 44 by a bolt 46. In other words, the pair of arm members 44f and 44r constitute a link body whose posture can be changed. Here, the rotation of the arm member 44 is normally hindered by a frictional force generated between the arm member 44 and the bolt 46 screwed to the tip. However, when a certain force or more is applied in the crushing direction, the bolt 46 can be rotated around the bolt 46 against the frictional force. As the arm member 44 rotates, the angle formed by the arm members 44f and 44r is changed, so that the entire width of the mounting portion is expanded and contracted. That is, in this case, the pair of arm members 44f and 44r connected by the bolt 46 functions as an elastic member that can expand and contract in the collapse direction, and the bolt 46 that connects the pair of arm members 44f and 44r inhibits the expansion and contraction. Functions as a member. And by setting it as this structure, the side member 18 can be easily crushed at the time of a front collision like the embodiment mentioned above, and can fully absorb an impact.

  Furthermore, although all of the above-mentioned inverter mounting tools 20 allow the side member 18 to be crushed at the time of a forward collision by allowing a part of the member constituting the mounting portion to be extensible and retractable in the crushed direction, A member with low direction rigidity may be used to allow the side member 18 to be crushed at the time of a normal collision.

  Specifically, as shown in FIG. 6, a pair of projecting members 50f and 50r projecting from the upper surface of the side member 18 may be connected by a beat-shaped member 52 having low rigidity in the crushing direction. The beat-shaped member 52 is a beat-shaped pipe member having a large number of irregularities formed uniformly on the outer surface thereof. The beat-shaped member 52 formed with a large number of irregularities has low rigidity in the arrangement direction of the irregularities, that is, the crushing direction, and is compressed and deformed only by applying a relatively small force in the crushing direction. Therefore, at the time of a normal collision, the placement portion is compressed and deformed by a force in a crushing direction generated by the normal collision. And the side member 18 can fully be crushed because a mounting part compresses and deforms in a crushing direction. As a result, similarly to the above-described embodiment, the side member 18 can sufficiently absorb the impact received at the time of a normal collision.

  As is clear from the above description, the mounting portion is configured by using a telescopic member that can expand and contract in the crushing direction or a member that has low rigidity in the crushing direction. 14 can be attached to the side member 18. In the above description, the case where the inverter 14 is attached to the side member 18 is described as an example. However, the vehicle member is not limited to the side member 18 as long as it is a vehicle skeleton member that functions as an impact absorbing member. For example, other components may be used instead of the inverter 14.

1 is a schematic configuration diagram of a vehicle according to an embodiment of the present invention. It is a perspective view of the inverter fixture in embodiment of this invention. It is a perspective view of another inverter attachment tool. It is AA sectional drawing in FIG. It is a perspective view of another inverter attachment tool. It is a perspective view of another inverter attachment tool. It is a disassembled perspective view of the conventional inverter fixture.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Vehicle, 12 Motor, 14 Inverter, 18 Side member, 20 Inverter attachment, 22 F-shaped pipe member, 24 Support member, 26 Overhang part, 28 Connection part, 30 Straight pin, 34 Connection hole, 36 L-shape Metal fitting, 38 Support pipe, 40 Overhang member, 42 Flat plate member, 44 Arm member, 52 Beat-like member.

Claims (6)

A component fixture for attaching an electronic component to a vehicle skeleton member that functions as an impact absorber that absorbs an impact by being crushed in the direction of collapse when an impact in a predetermined collapse direction is applied,
A mounting portion extending in a horizontal direction from the vehicle skeleton member to form a mounting surface on which the electronic component is mounted;
By connecting the vehicle skeleton member and the bottom surface of the mounting portion, a support portion that supports the mounting portion;
With
The placement section is
A stretchable member that is stretchable in the crushing direction;
An inhibition member that inhibits expansion and contraction of the expansion and contraction member, and the inhibition member that cancels the inhibition by applying a force in a crushing direction of a certain level or more;
A component fixture comprising: The component fixture according to claim 1,
The expansion and contraction member includes a pair of slide members that are slidable in the collapse direction, and expands and contracts in the collapse direction by the sliding movement of the pair of slide members,
The obstruction member is a pin member that is obstructed by sliding movement of the pair of slide members by being penetrated by the pair of slide members, and is a pin member that is broken by applying a force in a crushing direction above a certain level. A component fixture characterized by that. The component fixture according to claim 2,
The pair of slide members includes a first pipe member and a second pipe member having a smaller diameter than the first pipe member and a part of the second pipe member inserted into the first pipe member. . The component fixture according to claim 1,
The expansion and contraction member includes a pair of arm members rotatably connected to each other by a connection member, and expands and contracts in a crushing direction by the rotation of the pair of arm members,
The obstruction member is a male screw member that is screwed into the pair of arm members as the connecting member. A component fixture for attaching an electronic component to a vehicle skeleton member that functions as an impact absorber that absorbs an impact by being crushed in the direction of collapse when an impact in a predetermined collapse direction is applied,
A mounting portion extending in a horizontal direction from an upper surface of the vehicle skeleton member to form a mounting surface on which the electronic component is mounted;
By connecting the side surface of the vehicle skeleton member and the bottom surface of the mounting portion, a support portion that supports the mounting portion;
With
The placement section is
A pair of projecting members projecting in a cantilever form from the vehicle skeleton member, a pair of projecting members disposed at intervals in the crushing direction;
A connecting member extending in the crushing direction to connect the pair of overhanging members, and a beat-shaped connecting member having a plurality of irregularities formed on the surface thereof;
A component fixture comprising: The component fixture according to any one of claims 1 to 5,
The support part is
A front support member coupled to the vicinity of the front end of the mounting surface;
A rear support member that is arranged at an interval in the crushing direction with respect to the front support member, and is connected to the vicinity of the rear end of the mounting portion;
A component fixture comprising:

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