JP2832132B2 - Mounting bracket for resin molded products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for a resin molded product, and more particularly to a mounting bracket in which a bolt insertion hole is formed by a two-way punch.

[0002]

2. Description of the Related Art FIGS.
An example of this type of conventional mounting bracket similar to that shown in Japanese Patent Application Publication No. 79-79 is shown. The mounting bracket 1 has a tongue-shaped bracket main body protruding from a resin molded product base body and a bolt insertion hole 3 penetrating in a direction perpendicular to the upper and lower surfaces of the bracket main body. Bolt insertion hole 3
Is formed as an overlapping portion of a pair of notches 5 and 7 formed on the upper and lower surfaces of the bracket body, and the notches 5 and 7 are opposed to each other in parallel with the upper and lower surfaces of the bracket body. That is, it is formed by a pair of dies (so-called two-way dies) separated in the directions of arrows A and B. Further, the upper surface of the bracket body is a seat surface for receiving a bolt.

[0003]

When the bolt insertion hole 3 is formed by such a two-way punching die, a notch 5 having a width equivalent to the diameter of the bolt insertion hole 3 exists in the seating surface. Therefore, when the bolt is tightened, as shown in FIG. 14, there is a problem that a part of the head of the bolt 10 falls into the notch 5 and the bolt 10 is inclined. Therefore, although the washer 11 is used to prevent this, the inclination of the bolt 10 cannot be effectively prevented.
If the tightening is performed in a state where the bolt 10 is tilted, the mounting bracket 1 may be deformed or damaged, and in some cases, the thread of the bolt 10 or a nut (not shown) may be damaged. Was rare.

The present invention has been made in view of the above circumstances, and has as its object to provide a mounting bracket that can effectively prevent a bolt from tilting.

[0005]

The present invention has a bolt insertion hole penetrating in a direction perpendicular to upper and lower surfaces of a bracket body, and the bolt insertion hole is parallel to the upper and lower surfaces of the bracket body and opposed to each other. A mounting bracket of a resin molded product provided in an overlapping portion of a pair of notched portions formed along a direction, and a bottom surface for receiving a bolt or a nut is formed on an upper surface of the bracket body. Forming a convex portion flush with the seating surface from the center in the width direction of the bottom surface of the notched portion on one of the provided portions, and forming the convex portion on the other notched portion side facing the convex portion from the convex portion. The feature is that a wide concave portion is formed.

[0006]

In the mounting bracket having the above construction, when the bolt is passed through the bolt insertion hole and the bolt is fastened, there is a convex portion at the center of the notched portion on the side having the seating surface. Get on. Therefore, the load due to the fastening is evenly applied to the seat surface, and the inclination of the bolt is prevented. Further, when the mounting bracket is formed by a pair of dies that are combined and pulled apart in directions facing each other parallel to the upper and lower surfaces of the bracket body, bolts are formed as overlapping portions of the pair of dies that form the pair of cutouts. An insertion hole is formed. In the case where a convex portion flush with the seat surface is provided at the center in the width direction of the cut portion provided on the surface with the seat surface, the convex portion is formed on the seat surface on the other cut portion side opposite to the convex portion. Since the wider concave portion is formed, the convex portion can be formed by the pair of molds.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show a mounting bracket 21 according to a first embodiment. The mounting bracket 21 has a bolt insertion hole 23 penetrating in a direction perpendicular to the upper and lower surfaces of the tongue-shaped bracket main body. The bolt insertion hole 23 is formed as an overlapping portion of a pair of cutout portions 25 and 27 formed on the upper and lower surfaces of the bracket body. These missing portions 25, 2
7 is a pair of molds 50 separated in the directions of arrows A and B,
55 (see FIG. 3). On one side provided on the side where the seating surface 21a is provided, a convex portion 30 flush with the seating surface 21a is formed from the center in the width direction of the bottom surface of the notch 25, and the convex portion 3 is formed.
The convex portion 3 is formed on the seating surface 21a on the side of the other notched portion 27 facing
A recess 32 wider than zero is formed. The concave portion 32 is provided with a mold 50 (FIG. 3) for forming another notched portion 27.
(See FIG. 2).

Referring to FIG. 3, dies 50 and 55 and cutout 2
5 and 27 and the concave portion 32, the left and right convex portions 55a and 55b of one mold 55 form left and right spaces 25a and 25b of the cutout portion 25 on the upper surface side.
The protrusion 30 is left in the center of the left and right spaces 25a and 25b. Further, the cutout portion 27 on the lower surface side is formed by the bottom portion 57 of the other mold 50, and the concave portion 32 is formed by the protrusion 52 thereon. And this recess 32 is
The bolt insertion hole 23 is formed by notching a portion of the projection 30 corresponding to the bolt insertion hole 23.

According to the mounting bracket 21, since the projection 30 is provided at the center of the cutout 25 on the upper surface side, the head of the bolt 10 rides on the projection 30 as shown in FIG. Therefore, the load due to fastening will be evenly applied to the bearing surface,
The inclination of the bolt 10 is prevented.

FIG. 7 shows the mounting bracket 2 of the first embodiment on a protector 100 for protecting a wire harness and the like.
1 shows an example in which two pieces 1 are integrally formed. For example, a boss 13 and a bolt 1 with a washer 11
0, or a stud bolt 17 for fastening a nut 18 with a washer 19 to the boss 16.
Can be provided.

FIG. 8 shows an example in which two mounting brackets 51 according to a second embodiment of the present invention are integrally formed on a protector 100. The mounting bracket 51 of the second embodiment is
The lower surface of the mounting bracket according to the first embodiment is provided with a notch 25, a protrusion 30, and a recess 32 having the same shape as the upper surface thereof, and a notch 27 is formed at the center in the thickness direction. Have been.

FIG. 9 shows an example in which two mounting brackets 61 according to a third embodiment of the present invention are integrally formed on a protector 100. The mounting bracket 61 of the third embodiment includes:
A circular seat surface 61a for receiving a washer is formed by forming steps on the upper and lower surfaces of the mounting bracket of the second embodiment.

[0014]

As described above, according to the present invention,
Bolt inclination can be effectively prevented. Therefore, it is possible to avoid deformation of the mounting bracket, breakage of bolts and nut threads, and the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a plan view showing a relationship between a first embodiment of the present invention and a main part of a mold.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along the line VV of FIG. 3;

FIG. 6 is a sectional view showing a relationship between the first embodiment of the present invention and fastening bolts.

FIG. 7 is a perspective view of a protector including the mounting bracket according to the first embodiment of the present invention.

FIG. 8 is a perspective view of a protector provided with a mounting bracket according to a second embodiment of the present invention.

FIG. 9 is a perspective view of a protector provided with a mounting bracket according to a third embodiment of the present invention.

FIG. 10 is a perspective view of a conventional mounting bracket.

11 is a sectional view taken along the line XI-XI in FIG.

FIG. 12 is a plan view of a conventional mounting bracket.

FIG. 13 is a sectional view taken along the arrow XIII-XIII in FIG. 12;

FIG. 14 is a side sectional view showing a relationship between a conventional mounting bracket and a fastening bolt.

[Explanation of symbols]

 21, 51, 61 Mounting bracket 21a, 61a Seat surface 23 Bolt insertion hole 25, 27 Missing portion 30 Convex portion 32 Concave portion 50, 55 Mold

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 3/04 H02G 3/26

Claims (1)

(57) [Claims] 1. A pair of bolt insertion holes penetrating in a direction perpendicular to upper and lower surfaces of a bracket body, and the bolt insertion holes are formed along a direction parallel to the upper and lower surfaces of the bracket body and opposed to each other. Is provided in the overlapping part of the missing part of
In a mounting bracket of a resin molded product having a bottom surface for receiving a bolt or a nut formed on an upper surface of the bracket body, the seating surface extends from a center in a width direction of a bottom surface of one of the notches provided on a surface having the seating surface. A mounting bracket for a resin molded product, wherein a convex portion is formed which is flush with the convex portion, and a concave portion wider than the convex portion is formed on a seating surface on the side of the other lacking portion facing the convex portion.