JP7342986B2 - Unit mounting structure - Google Patents

Description

The present invention relates to a mounting structure for mounting a unit to a vehicle body frame.

In a vehicle with a frame structure such as a truck, various units are attached to the vehicle body frame with brackets. For example, a bracket that supports the unit is fixed to a pair of cross members (hereinafter also referred to as frame members) of a vehicle body using bolts and nuts that are fastening members.

JP 2021-54212 Publication

The unit is also fixed to the bracket by a fastening member, and in order to avoid interference with the fastening member, there are restrictions on the positions of the bolts and nuts that fix the bracket to the frame member.As a result, the bracket is attached to the frame member. There is a risk that it may not be fixed properly.

Therefore, the present invention has been made in view of these points, and an object of the present invention is to appropriately fix a unit mounting bracket and a frame member.

One aspect of the present invention includes a frame member of a vehicle body, and a bracket for supporting a unit and attaching it to the frame member, and the bracket is bent from one end side of a base portion, and the bracket is bent from one end side of a base portion, and the bracket is bent from one end side of a base portion, and a first fixing part fixed to the frame member by a first fastening member; the base part is bent so that the first fastening member is exposed from the other end side; and the bolt and nut of the second fastening member are attached to the frame member. a second fixing part that is sandwiched and fixed; the second fixing part is formed with an insertion hole through which the bolt of the second fastening member is inserted; A unit mounting structure is provided that extends to a corner of the base part and the second fixing part.

Further, the second fixing portion may be fixed to the frame member by being sandwiched between the bolt and the hexagonal nut, and one vertex of the hexagonal nut may be exposed from the insertion hole.

Further, one vertex of the hexagonal nut may be located lower than the upper surface of the other end of the base portion in the vertical direction.

Further, the nut screwed into the bolt may be welded to the inner surface of the second fixing part in advance.

Further, the second fixing portion may be fixed such that the corner portion overlaps a corner portion of the U-shaped frame member.

According to the present invention, it is possible to appropriately fix the mounting bracket of the unit and the frame member.

FIG. 1 is a schematic diagram for explaining an overview of a mounting structure for a unit in a vehicle according to one embodiment. 3 is a schematic diagram for explaining the relationship between the front bracket 32 and the unit 20. FIG. 3 is a schematic diagram for explaining the configuration of a second fixing portion 45 of the front bracket 32. FIG. 4 is a sectional view taken along line BB in FIG. 3. FIG. FIG. 3 is a schematic diagram for explaining the flow of work for fixing the front bracket 32 and the front cross member 11. FIG.

<Summary of unit installation structure>
A vehicle unit mounting structure according to one embodiment will be described with reference to FIG.

FIG. 1 is a schematic diagram for explaining an overview of a vehicle unit mounting structure according to one embodiment.
The vehicle is, for example, a frame-structured truck. The vehicle includes, as a body frame, a pair of side frames (not shown) arranged along the longitudinal direction of the vehicle, and a front cross member 11 arranged along the width direction of the vehicle and connected to the pair of side frames. and a rear cross member 12. The front cross member 11 is a frame member located on the front side in the front-rear direction, and the rear cross member 12 is a frame member located on the rear side in the front-rear direction. The front cross member 11 and the rear cross member 12 are formed in a U-shape.

The unit 20 is, for example, a control unit that controls the operation of the engine of the vehicle, but is not limited thereto, and may be another unit attached to the vehicle body frame. The unit 20 is located between the front cross member 11 and the rear cross member 12 in the longitudinal direction, and is attached to the front cross member 11 and the rear cross member 12 via a bracket 30.

The bracket 30 is located between the front cross member 11 and the rear cross member 12 and supports the unit 20. The unit 20 is fixed to a bracket 30. Further, since the bracket 30 is fixed to the front cross member 11 and the rear cross member 12, the unit 20 is attached between the front cross member 11 and the rear cross member 12.

The bracket 30 includes a support bracket 31, a front bracket 32, and a rear bracket 33. Here, the support bracket 31, front bracket 32, and rear bracket 33 have an integrated structure. The unit 20 is attached to the bracket 30 while sliding along the vehicle width direction.

The support bracket 31 is disposed below the unit 20 and supports the unit 20. One end of the support bracket 31 on the front side in the longitudinal direction is welded to the front bracket 32, and the other end on the rear side in the longitudinal direction of the support bracket 31 is welded to the rear bracket 33.

The front bracket 32 is fixed to the side surface 21 of the unit 20 by a plurality of fastening members 61 (see FIG. 2). Further, the front bracket 32 is fixed to the inner surface 11a of the front cross member 11 by fastening members 62 and 63.

The rear bracket 33 is fixed to the side surface 22 of the unit 20 opposite to the side surface 21 by a plurality of fastening members 61. Further, the rear bracket 33 is fixed to the upper surface 12a of the rear cross member 12 by a plurality of fastening members 64.

By the way, the fastening members 61, 62, and 63 are fastened in the direction of the arrow A in FIG. Since the fastening members 62 and 63 are fastened from the same direction in this manner, the positions of the fastening members 62 and 63 are adjusted with respect to the fastening member 61 so that they do not become an obstacle during fastening.

FIG. 2 is a schematic diagram for explaining the relationship between the front bracket 32 and the unit 20. In FIG. 2, for convenience of explanation, the front cross member 11 and the rear bracket 33 are omitted. The fastening members 62 and 63 are located apart from the fastening member 61 as shown in FIG. 2, and the front bracket 32 has a configuration that allows the above-mentioned positional relationship.

<Detailed configuration of front bracket>
The detailed configuration of the front bracket 32 will be explained with reference to FIGS. 1 to 4.
FIG. 3 is a schematic diagram for explaining the configuration of the second fixing portion 45 of the front bracket 32. As shown in FIG. FIG. 4 is a sectional view taken along line BB in FIG.

The front bracket 32 has a base portion 41, a first fixing portion 43, and a second fixing portion 45, as shown in FIGS. 1 and 2.
The base portion 41 is joined to the support bracket 31. The base portion 41 has a stepped shape.

As shown in FIG. 1, the first fixing portion 43 is a portion bent at right angles from the upper flat plate portion 41a of the base portion 41, and is fixed to the side surface 21 of the unit 20 by a fastening member 61. The first fixing portion 43 has insertion holes through which bolts of the two fastening members 61 (see FIG. 2) are inserted.

As shown in FIG. 1, the second fixing part 45 is a part bent at a right angle from the lower flat plate part 41b of the base part 41, and is located below the first fixing part 43 in the vertical direction. As shown in FIG. 2, the second fixing portion 45 is provided so that the fastening member 61 is exposed. Thereby, when fastening the fastening member 61, it is possible to prevent the second fixing part 45 from becoming an obstacle. Further, the second fixing portion 45 is fixed so as to overlap the corner portion 11b (FIG. 1) of the front cross member 11. Thereby, the length of the second fixing part 45 in the height direction can be reduced.

As shown in FIG. 1, the second fixing portion 45 is fixed to the front cross member 11 by fastening members 62 and 63. Specifically, the second fixing portion 45 is fixed to the front cross member 11 by the bolt 62a and nut 62b of the fastening member 62 and the bolt 63a and nut 63b of the fastening member 63. The bolt 62a of the fastening member 62 is screwed into a nut 62b located on the inner surface 45a of the second fixing part 45. Similarly, the bolt 63a of the fastening member 63 is also screwed into a nut 63b located on the surface 45a.

Nut 62b and nut 63b are hexagonal nuts. Furthermore, the nuts 62b and 63b are welded to the surface 45a in advance (see FIGS. 3 and 4). This improves the workability of fastening the fastening members 62 and 63. However, the present invention is not limited to this, and the nuts 62b and 63b may not be welded to the surface 45a.

As shown in FIG. 3, the second fixing portion 45 has an insertion hole 46 and an insertion hole 47 formed therein. A bolt 62a of the fastening member 62 is inserted into the insertion hole 46, and a bolt 63a of the fastening member 63 is inserted into the insertion hole 47. The insertion hole 47 is located below the insertion hole 46 in the vertical direction.

In this embodiment, the insertion hole 46 is a round hole, whereas the insertion hole 47 is an elongated hole. Further, the insertion hole 47 extends to the corner portion 42 of the base portion 41 and the second fixing portion 45, as shown in FIGS. 3 and 4. Specifically, the insertion hole 47 extends halfway through the lower flat plate portion 41b of the base portion 41, as shown in FIG. Therefore, a portion of the nut 63b (specifically, one apex 63c of the hexagonal nut 63b) is exposed from the insertion hole 47, as shown in FIG. Further, the exposed apex 63c of the nut 63b is located below the upper surface 41c of the lower flat plate portion 41b of the base portion 41, as shown in FIG. That is, a portion of the nut 63b on the vertex 63c side is located in the insertion hole 47. This allows the nut 63b to be placed closer to the corner portion 42.

By extending the insertion hole 47 to the corner portion 42 as described above, it is possible to prevent the nut 63b of the fastening member 63 from interfering with the corner portion 42. That is, even if the nut 63b is disposed near the corner portion 42, the front bracket 32 and the front cross member 11 can be fixed by the bolt 63a and the nut 63b.

Below, the flow of the work of fixing the front bracket 32 and the front cross member 11 after the unit 20 is fixed to the bracket 30 with the fastening member 61 will be explained with reference to FIG.

FIG. 5 is a schematic diagram for explaining the flow of work for fixing the front bracket 32 and the front cross member 11. Here, it is assumed that a nut 63b is fixed to the front bracket 32 in advance by welding, as shown in FIG. 5(a). Next, the operator adjusts the position of the bracket 30 so that the front bracket 32 overlaps the corner portion 11b of the front cross member 11, as shown in FIG. 5(b). Next, as shown in FIG. 5(c), the operator screws together the bolt 63a and nut 63b of the fastening member 63 with the front bracket 32 and front cross member 11 sandwiched therebetween. Thereby, the front bracket 32 is fixed to the front cross member 11. The attachment of the unit 20 is completed by fixing the rear bracket 33 to the rear cross member 12 using the fastening member 64.

In the above description, the nut 63b is a hexagonal nut, but the nut 63b is not limited thereto. For example, the nut 63b may be a flanged nut. In this case, by enlarging the insertion hole 47, it is possible to prevent the flange of the nut 63b from coming into contact with each other.

<Effects of this embodiment>
The bracket 30 of the embodiment described above has the second fixing part 45 fixed to the front cross member 11 by the bolt 63a and nut 63b of the fastening member 63. The second fixing part 45 is formed with an insertion hole 47 into which the bolt 63a is inserted, and the insertion hole 47 extends to the corner part 42 of the second fixing part 45 and the base part 41.
As a result, even if the nut 63b of the fastening member 63 is placed near the corner portion 42 in order to separate it from the fastening member 61, a part of the circumferential surface of the nut 63b is located in the insertion hole 47, so that the nut 63b is located near the corner portion 42. It does not interfere with the section 42. As a result, even when the fastening members 61 and 63 are fastened from the same direction, the front bracket 32 can be appropriately fixed to the front cross member 11.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist. be. For example, all or part of the device can be functionally or physically distributed and integrated into arbitrary units. In addition, new embodiments created by arbitrary combinations of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiment resulting from the combination have the effects of the original embodiment.

11 Front cross member 20 Unit 30 Bracket 32 Front bracket 41 Base part 42 Corner part 43 First fixing part 45 Second fixing part 46 Insertion hole 61 Fastening member 63 Fastening member 63a Bolt 63b Nut

Claims (5)

vehicle body frame members;
a bracket for supporting and attaching the unit to the frame member;
Equipped with
The bracket is
a first fixing part bent from one end side of the base part and fixed to a side surface of the unit by a first fastening member;
a second fixing part that is bent so that the first fastening member is exposed from the other end side of the base part, and is fixed to the frame member by being sandwiched between bolts and nuts of the second fastening member. ,
The second fixing part is formed with an insertion hole through which the bolt of the second fastening member fastened in the same direction as the first fastening member is inserted,
The insertion hole extends to a corner portion of the base portion and the second fixing portion.
Unit mounting structure. The second fixing part is fixed to the frame member by being sandwiched between the bolt and the hexagonal nut,
one vertex of the hexagonal nut is exposed from the insertion hole;
A mounting structure for the unit according to claim 1. One vertex of the hexagonal nut is located lower than the upper surface of the other end of the base portion in the vertical direction;
A unit mounting structure according to claim 2. The nut screwed into the bolt is welded in advance to the inner surface of the second fixing part.
A mounting structure for a unit according to any one of claims 1 to 3. The second fixing part is fixed so that the corner part overlaps the corner part of the U-shaped frame member.
A mounting structure for a unit according to any one of claims 1 to 4.

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