JP2002188617A - Unit device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a unit device which can fit without looseness and remove without damage and can be manufactured at a low price. SOLUTION: When fitting a stay to the upper and the lower cases of a unit device to fix it to a vehicle body, a cap hole 41 having the first walls 43, 44 formed into about the width of two faces of a hexagonal column shaped nut and stopping the rotation of the nut and second walls 45, 46 to cross at right angle with a screwed direction of the nut to face the both sides of the nut are arranged inside the side face of the lower case, and the screw part 56 of the bolt 55 passing through a inserting hole 48 of the second wall 45 from the inserting hole 22 of the stay is screwed into the screw hole of the nut kept and held inside this cap hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a unit device mounted on a vehicle body or the like.

[0002]

2. Description of the Related Art Heretofore, it has been frequently used to attach a unit device assembled in a case to a vehicle body or the like.
For example, in the unit device shown in FIG. 11, a board Assy 2 provided with a female connector 1 and on which various functional components are arranged is housed in a case 3, and a male connector (not shown) is closed by a cover 4 so as to be connectable from the outside. Later, the stay 5 previously screwed and fixed to the vehicle body or the like is attached to the vehicle body by inserting and fitting into the snap-fit portion 6 integrally formed with the case 3.

[0003]

However, in such a conventional unit device, the relative dimensional accuracy between the stay 5 and the snap-fit portion 6 is increased in order to mount the unit device without rattling. Must be fitted
The mold manufacturing cost increases and the cost increases,
It takes a long time to make adjustments to fit each other. Furthermore, when the case 3 is made of resin, the snap-fit portion 6 may be plastically deformed depending on the environment at the time of use. Further, since the snap-fit portion 6 is of a type in which the stay 5 is inserted into the guide rail and firmly fitted so that it cannot be pulled out, there is a problem that the snap-fit portion 6 may be damaged if it is removed.

The present invention has been made in order to solve such a problem, and provides an inexpensive unit device which can be attached without rattling and can be removed without being damaged. Is what you do.

[0005]

According to the unit apparatus of the present invention, the head of the nut or the bolt having a width not less than the width across two sides of the head of the polygonal nut or the bolt and less than the diagonal distance is inserted. An opening to be provided, a pair of first wall portions facing each other in the two-plane width direction, a pair of second wall portions facing each other in a thickness direction of a head of the nut or the bolt, and the nut Alternatively, it is provided with a blind hole having a bottom surface for stopping the movement of the head of the bolt.

[0006] With this configuration, by inserting the head of the nut or bolt through the opening of the blind hole, the first hole of the blind hole is inserted.
When the bolt or nut is screwed into the nut or bolt from the outside of the side of the case, the nut or bolt is stored with the flat part of the peripheral surface of the nut head facing the wall of the nut or bolt. The first wall portion, which is smaller than the diagonal distance between the corners of the outer periphery of the nut or bolt head, can stop (limit) rotation (idling) while moving in the screwing direction. The second wall portion can prevent falling off. Therefore, it can be screwed to a stay (attachment part) or the like fixed to the main body without using the snap-fit structure, and adjustment and dimensional accuracy for making the fitting state can be unnecessary.

The blind hole has a configuration in which the opening of the head of the nut or bolt is located upward, so that the head of the nut or bolt is simply inserted from above, without dropping. It can be positioned and held at the screw-in position, and has a configuration in which a through hole is formed with an opening smaller than the width across the flat surface. Can be prevented beforehand. Therefore, workability can be improved.

Further, in the blind hole, at least one projection for limiting the movement of the head of the nut or bolt is formed, for example, on the inner surface of the first wall portion or the second wall portion. , The head of the stored nut or bolt does not fall off even when the case is inverted. Therefore, workability can be improved.

Further, the blind hole has a structure in which a slit extending from the opening to a lower portion of the through hole is formed in the second wall, so that dust or the like entering from the opening is dropped. Can prevent the nut or bolt from being hindered from being stored, and if a projection is formed on the inner surface on the opening side, the nut or bolt can be easily expanded at the time of storage to prevent the nut or bolt from being stored. Head can be inserted. Therefore, workability can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 6 are views showing a first embodiment of a unit device according to the present invention.

In FIG. 1, the unit device is, for example,
A control circuit board Assy 12 having a female connector 11 for controlling the vehicle; and resin upper and lower cases 13 and 14 for mounting the control circuit board Assy 12 so that a male connector (not shown) can be connected to the female connector 11. The upper and lower cases 13 and 14 are screwed to a vehicle body or the like by a stay 15.

The upper and lower cases 13 and 14 are divided into upper and lower parts so that the female connector 11 faces the outside.
When the ssy 12 is mounted and closed, the plate-shaped snap-fit portion 16 integrally formed with the upper case 13 is elastically deformed, and the projection 18 on the side surface of the lower case 14 is fitted into the engagement hole 17 so as to be unable to expand. It has become. Stay 15 is
An engaging claw 20 formed in a hook shape on the distal end side is hooked into an engaging hole 19 formed on the upper surface of the upper case 13, and a bolt (not shown) is inserted into an insertion hole 21 opened on the base side to the vehicle body. It can be attached.

The lower case 14 is integrally formed with a bag hole 41 for accommodating the nut 31 inside four side surfaces so as to correspond to the mounting position of the stay 15. The blind hole 41 is
As shown in FIGS. 2 and 3, a hexagonal prism-shaped nut 31 is provided.
The opening 42 into which the is inserted is open upward. It should be noted that the blind hole 41 is not limited to four installation locations,
It may be arbitrarily designed depending on the strength or the like. In addition, bag hole 41
Are integrally formed of the same resin, but may be formed by two-color molding with a different material, for example, hard rubber, and may be formed separately from an aluminum plate and fixed. Nor.

The blind hole 41 is formed by a pair of first wall portions 43 and 44 extending inward from the inner surface of the case.
The nut 31 is slightly wider than the two-face width L1 (the distance between the flat portion 32a and the flat portion 32b) in a parallel relationship with the outer periphery of the nut 31 so that the nut 31 can be easily inserted. The inner surfaces face each other with a width W of less than the interval L2 between the portion 33a and the corner portion 33b), and a pair of second wall portions 45, 46 orthogonal to the first wall portions 43, 44 are provided.
Will face the front and back of the nut 31 at right angles to the direction in which the nut 31 is screwed into the screw hole 34.

A projection 47 is formed on each of the inner surfaces of the first walls 43 and 44 on the side of the opening 42, and the projection 47 allows the nut 31 to be easily pushed in from the opening 42. It is inclined downward in a wedge shape so as to restrict easy movement in the detaching direction. In addition, the protrusion 47 has a distance between two ends L,
It is provided so as to be less than 1.

The second wall 45 has a threaded portion 56 of a bolt 55 (shown in FIG. 4) which is screwed into the threaded hole 34 of the nut 31.
A cut-out 49 is formed in the second wall 46 so as not to hinder the screwing even if the screw portion 56 is long.

The blind hole 41 has a flat portion 32c and a flat portion 32 which are located at the lower portion when the corner portion 33a is at the lowest position.
d, a bottom surface portion 50 for positioning and supporting the nut 31 is formed below the opening 42 so that the screw hole 34 matches the insertion hole 48 of the second wall portion 45. The screw portion 56 of the bolt 55 can be screwed in without being supported by a nut, and a through hole 51 is formed in the center of the bottom portion 50 so as to open narrower than the two-sided width L1 of the nut 31. In addition, since the notch 49 is cut out and formed without the slit 61 described later, the nut 31 is formed.
Open when pushing.

Therefore, as shown in FIGS. 4 to 6, the flat portion 32 faces the first wall portions 43 and 44, and the nut 31 is placed in the blind hole 41 with the corner portion 33a at the lowest position.
(FIG. 4), and inserted into the first wall portion 4 while being in contact with the projection 47 formed on the inner surface.
By expanding the projections 47 while expanding the nuts 3 and 44 (FIG. 5), the nut 31 is brought into surface contact with the bottom surface 50.
It can be stored in a supported position (FIG. 6). After that, when the screw portion 56 of the bolt 55 is inserted into the screw hole 34 of the nut 31 from the insertion hole 22 opened in the middle portion of the stay 15 through the insertion hole 48 of the second wall portion 45, the nut The rotation of the flat portion 32 of the first member 31 and the rotation of the first wall portions 43 and 44 can be restricted, and the first wall portions 43 and 44 can be prevented from running idle. The second wall 45 can be fixed by tightening and clamping. Note that the stay 15 may be screwed to the vehicle body after the bolt 55 is screwed into the nut 31 and fixed to the upper and lower cases 13 and 14, or vice versa.

At this time, the blind hole 41 has the opening 42 opened upward, so that the nut 31 can be easily pushed in. While the nut 56 can be easily screwed in, even if the lower case 14 is inverted, it is possible to prevent the pushed-in nut 31 from coming off by restricting the nut 31 from coming off by the projection 47.

Further, even if dust or the like enters inside, the bag hole 41 is dropped from the through hole 51 and the nut 31 is removed.
Can be prevented from becoming in a state of surface contact with the bottom surface portion 50 beforehand.

As described above, in the present embodiment, the bolt 31 is screwed in while the nut 31 is prevented from slipping by simply inserting the nut 31 through the opening 42 of the blind hole 41 and pushing it in. , And can be attached to the vehicle body without rattling regardless of the snap-fit structure. Therefore, the dimensional accuracy of the upper and lower cases 13 and 14 can be loosened to make them inexpensive and can be firmly attached without adjustment, while being damaged only by loosening the screwing of the bolt 55 and the nut 31. It can be removed without it.

Since the projections 47 are provided on the first wall portions 43 and 44, when the nut 31 is inserted into and removed from the blind hole 41, the distance between the tips of the projections 47 is set to the two-plane width L1.
The first wall portions 43 and 44 can be dispersed and expanded by the above amounts, respectively.
4 can be reduced. On the other hand, the protrusion 47 is provided on one of the first wall portions 43 and 44 so that the distance between the tip and the other of the first wall portions 43 and 44 is less than the two-surface width distance L1. 47 can be reduced.

As another aspect of the present embodiment, as shown in FIG. 7, the interval between the second wall portions 45 and 46 is formed to be about the thickness of the nut 31, and the second wall portion 46 The protrusions 57 may be formed on the inner surfaces on both sides of the notch 49. According to this configuration, the nut 31 to be pushed in can be inserted while being in contact with the projection 57. In this state, it is possible to restrict the nut 31 from being detached by the projection 57 after the state is set.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a diagram showing a second embodiment of the unit device according to the present invention. In addition, since the present embodiment is configured substantially in the same manner as the above-described embodiment, the same components are denoted by the same reference numerals, and the characteristic portions will be described (the same applies to the third embodiment).

In FIG. 8, the blind hole 41 is formed in the second wall 4
A slit 61 extending downward from the notch 49 is formed so as to divide the slit 6, and the slit 61 communicates with the through hole 51 opened at the center of the bottom surface 50.

Therefore, dust and the like entering the inside can be dropped from the slit 61, and when the nut 31 is pushed through the opening 42 of the blind hole 41, the second wall 46 is easily pressed. Can be expanded.

As described above, in this embodiment, in addition to the functions and effects of the above-described embodiment, it is possible to prevent the nut 31 pushed into the blind hole 41 from being in surface contact with the bottom surface portion 50 due to dust. The nut 31 can be easily pushed in from the opening portion 42 while being prevented. Therefore, workability can be further improved.

Next, a third embodiment of the present invention will be described with reference to the drawings. 9 and 10 are views showing a third embodiment of the unit device according to the present invention.

In FIG. 9, the blind hole 41 is formed in the second wall 4
The protrusion 67 is formed on the inner surface of both sides of the insertion hole 48 of the fifth, and the distance between the protrusion 67 and the inner surface of the second wall portion 46 is formed to be about the thickness of the nut 31.

Therefore, as shown in FIG. 10, by inserting the nut 31 from the second wall 46 side of the opening 42 with the corner 33 at the lowest position, the first wall 4
The nut 31 can be stored in the blind hole 41 in a state in which the flat portion 32 faces each other without pushing out the flat portions 3 and 44 (a), and thereafter, the screw portion 56 of the bolt 55 is connected to the stay 1.
5 is inserted through the insertion hole 22 of the second wall portion 45 and the insertion hole 48 of the second wall portion 45 (b), and screwed into the screw hole 34 of the nut 31 (c).
The first wall portions 43 and 44 stop the rotation (idling) of the flat portion 32 of the nut 31 and tighten the second wall portion 45 together with the stay 15 together with the head 57 of the bolt 55. -It can be clamped and fixed (d).

As described above, in this embodiment, in addition to the functions and effects of the above-described embodiment, the opening 42 of the blind hole 41 is formed.
Nut 31 can be inserted without pushing it into
The nut 31 can be fixed to the stay 15 while restricting the nut 31 from easily falling off by the projection 67. Therefore, the pushing force required for the mounting operation is not required, and the workability can be further improved.

In the above embodiment, the case where the nut 31 is housed in the blind hole 41 will be described. However, the head 57 of the bolt 55 may be housed.
The insertion hole 48 may be opened upward so that the screw portion 56 can be stored from above.

When the insertion hole 48 is opened upward, FIG.
As shown in FIG. 0 (c), when the bolt 55 and the nut 31 are not fully tightened, both the bolt 55 and the nut 31 may come off from the insertion hole 48. In this case, the second wall 45 Can be prevented from being detached by the projection 67 provided on the second member.

[0034]

As described above, according to the present invention, the nut is prevented from slipping by simply inserting the nut itself (nut outer portion) or the head of the bolt from the opening, and the outside of the case side is prevented. The bolt or nut can be screwed in from the side and fixed, and can be attached without using the snap-fit structure. Therefore, there is no need for adjustment and dimensional accuracy for making the fitting state, it can be manufactured at low cost, and it can be attached without rattling and can be removed without being damaged. A unit device having the same can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a unit device according to a first embodiment of the present invention.

FIG. 2A is an enlarged plan view showing a main part of the unit device according to the present invention. FIG. 2B is a side view showing a main part of the unit device according to the present invention.

FIG. 3 is a plan view showing a nut used in the unit device according to the present invention.

FIG. 4 is an enlarged side view illustrating a mounting state of the unit device according to the present invention.

5A is an enlarged plan view illustrating a state of the unit device according to the present invention when the nut is inserted. FIG. 5B is an enlarged side view illustrating a state of the unit device according to the present invention when the nut is inserted.

FIG. 6A is an enlarged plan view illustrating a state where the nut of the unit device according to the present invention is inserted. FIG. 6B is an enlarged side view illustrating a state where the nut of the unit device according to the present invention is inserted.

FIG. 7 is a plan view showing another embodiment of the unit device according to the present invention.

FIG. 8 is a side view showing a unit device according to a second embodiment of the present invention.

FIG. 9A is an enlarged plan view showing a main part of a unit device according to a third embodiment of the present invention. FIG. 9B is an enlarged side view showing a main part of the unit device according to the third embodiment of the present invention. (C) AA sectional view in (a) showing a main part of the unit device according to the third embodiment of the present invention.

FIG. 10 (a) is an enlarged plan view showing a state where a nut of a main part of the unit device according to the third embodiment of the present invention is inserted, and (b) a unit device according to the third embodiment of the present invention. An enlarged plan view showing a state where the nuts and bolts of the main part are inserted. (C) An enlarged plan view showing a state where the nuts and the bolts of the main part of the unit device according to the third embodiment of the present invention are fitted. FIG. 11 is an enlarged plan view showing a state where nuts and bolts of main parts of the unit device according to the third embodiment of the present invention are tightened.

FIG. 11 is an exploded perspective view of a conventional unit device.

[Explanation of symbols]

 13 Upper case 14 Lower case 15 Stay 16 Snap fit part 21, 22 Insertion hole 31 Nut 32 Flat part 33 Corner part 34 Screw hole 41 Bag hole 42 Opening 43, 44 First wall part 45, 46 Second wall part 47, 57, 67 Projection 48 Insertion hole 49 Notch 50 Bottom part 51 Through hole 55 Bolt 56 Screw part 57 Head 61 Slit

Claims (8)

[Claims] 1. An opening into which a head of a nut or a bolt having a width not less than a width across a face of a polygonal nut or a bolt and less than a diagonal distance is to be inserted; The movement of the pair of first wall portions facing each other, the pair of second wall portions facing each other in the thickness direction of the nut or the bolt head, and the movement of the nut or the bolt head are stopped. A unit device comprising a blind hole having a bottom portion for use. 2. The unit device according to claim 1, wherein the opening is located upward. 3. The unit device according to claim 1, wherein the blind hole is formed with a through hole that is opened with a width smaller than the width across the two planes. 4. The unit device according to claim 1, wherein at least one projection is formed on an inner surface of the blind hole. 5. The unit device according to claim 4, wherein the projection is formed on the first wall. 6. The unit device according to claim 4, wherein the protrusion is formed on the second wall. 7. The unit device according to claim 1, wherein a slit extending from the opening to a lower portion of the through hole is formed in the second wall. 8. The vehicle according to claim 1, wherein said nut or said bolt is used to attach to a vehicle body.
The unit device according to any one of the above.