JP2001082427A - Fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture facilitating the forming work of a hole to a plate and easily removable from the plate. SOLUTION: A fixing part 1 has a leg part 3 rotatably inserted to the circular part 11c of a mount hole 11 formed in a plate, a locking protruding piece 5 provided protrusively from the tip of the leg part 3, and a pressing wing part 7 provided protrusively from the base end of the leg part 3. The locking protruding piece 5 is inserted to a cutout part 11a formed around the circular part 11c, whereby the leg part 3 can be inserted to the circular part 11c. An engagement part 5b is formed on the surface of the locking protruding piece 5 in a small stepped shape, and when rotated 90 deg. after the insertion of the leg part 3 and then released, the engagement part 5b is engaged with the cutout part 11b from the reverse side. This engagement can be released by pushing the leg part 3, and the removing work is facilitated. The positional relation of the cutout part 11b to the mount hole 11 is constant regardless of the plate thickness, and the formation of only one hole suffices for one fixture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for attaching a bundle of wires after wiring, a printed wiring board, and the like to a plate such as a chassis or a panel, and more particularly to a technique for fixing the fixture to the plate. .

[0002]

2. Description of the Related Art Hitherto, fixtures for fixing a bundle of electric wires after wiring, a printed wiring board and the like to a plate material such as a chassis and a panel have been widely used. Such a fixture is
Generally, it has a holding portion for holding a wire bundle, a printed wiring board, and the like, and a fixing portion fixed to a plate material such as a chassis or a panel.

FIG. 4 shows the shape of a fixing device 50 as a conventional example. FIG. 4 (A) is a front view, FIG. 4 (B) is a bottom view, and FIG. FIG. 4 is a plan view showing the shape of a hole formed in a plate material for the purpose. As shown in FIG. 4A, the fixing tool 50 includes a fixing portion 51 fixed to a plate member and a grip portion 52 for gripping a wire bundle.
Has an arm 52a for holding the wire bundle from both sides.

[0004] The fixing portion 51 is provided with a mounting hole 6 formed in a plate material.
A leg portion 53 rotatably inserted into the one circular portion 61c;
A pair of locking projections 55 provided so as to protrude from the distal end of the leg portion 53 in the outer circumferential direction while changing the direction by 180 ° from each other, and the locking projection 55 from the base end of the leg portion Instead, it has a pair of pressing wing portions 57 provided so as to protrude in the outer peripheral direction. As shown in FIG. 4B, the locking projection 55 projects substantially rectangular when viewed from below, and
The leg 53 can be inserted into the circular portion 61c by being inserted through the notch 61a also formed in a substantially rectangular shape around 1c.

When the leg portion 53 is inserted into the circular portion 61c by a predetermined amount or more, the pressing wing portion 57 abuts on the surface of the plate and is elastically deformed, and the locking projection 55 is disposed on the back side of the plate. When the leg portion 53 is rotated in the circular portion 61c in this state, the locking projection 55 is pressed against the back surface of the plate by the elastic force applied from the pressing wing portion 57. Then, the locking projection 55 and the pressing wing 5
7 sandwich the plate material in the plate thickness direction, whereby the fixing portion 51 is fixed to the plate material.

[0006] However, if the plate material is merely sandwiched between the locking projection 55 and the pressing wing portion 57 as described above, the fixing tool 50 is required.
Is rotated about the leg 53 by receiving an external force, the locking projection 55 moves to a position overlapping the notch 61a, and the fixture 50 is moved.
May come off the plate. Therefore, conventionally, a projection 59 is provided on the lower surface of the pressing wing portion 57, and an engagement hole 63 that engages with the projection 59 is also provided on the plate member. I have.

[0007]

However, in this case,
When attaching the fixing device 50 to the plate, the leg portion 53 may be pushed into the mounting hole 61 and then rotated until the projection 59 engages with the engaging hole 63. However, when the fixing device 50 is removed from the plate, The work was troublesome. That is, in this case,
After the pressing wing portion 57 provided with the projection 59 is separated from the plate material by a driver or the like, it is necessary to rotate the fixing tool 50 while holding the driver or the like as it is. Therefore,
With the conventional fixture 50, the work efficiency of the removal work was poor.

Further, in the fixing device 50 described above, it is necessary to form an engaging hole 63 in addition to the mounting hole 61 in the plate material. In addition, since the projection 59 is provided on the lower surface of the pressing wing portion 57, even when the same fixing tool 50 is used, the distance between the mounting hole 61 and the engaging hole 63 needs to be changed according to the thickness of the plate material. Occurs. That is, since the amount of deformation of the pressing wing portion 57 changes according to the plate thickness, the distance between the circular portion 61c and the engagement hole 63 also changes. For this reason, the work efficiency cannot be sufficiently improved even in the step of drilling the mounting holes 61 and the like in the plate material.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing device which can easily perform a hole forming operation on a plate material and can also easily perform a removal operation from the plate material.

[0010]

Means for Solving the Problems and Effects of the Invention According to the first aspect of the present invention, which has been made to attain the above object, there is provided a substantially circular portion and a notch formed around the circular portion. And a leg portion rotatably inserted into the circular portion of the mounting hole formed in the plate material, and provided to protrude in an outer peripheral direction from the leg portion, and the leg portion is inserted into the mounting hole by a predetermined amount or more. When pressed, the pressing wing portion abuts against the surface of the plate material and is elastically deformed. The pressing wing portion is provided so as to protrude in an outer peripheral direction from the leg portion. And a locking protrusion disposed on the back side of the plate material when the predetermined amount or more is inserted, and a fixing tool provided on the pressing wing portion side of the locking protrusion, When the leg is inserted beyond the predetermined amount, it is disposed on the back side of the plate, and then the leg is When a predetermined amount of rotation in the circular portion,
An engagement portion for preventing rotation of the leg by engaging an engagement hole formed in the plate material around the circular portion of the mounting hole separately from the cutout portion from the back surface side. It is characterized by:

According to the present invention having the above-described structure, when the leg is inserted into the mounting hole beyond the predetermined amount by inserting the locking protrusion into the notch of the mounting hole, the locking protrusion and the engaging member are engaged. The joining portion is disposed on the back side of the plate, and the pressing wing portion abuts on the surface of the plate and is elastically deformed. At this time, when the leg portion is rotated within the circular portion of the mounting hole, similar to the above-described fixing device 50,
The locking projection and the pressing wing portion sandwich the plate in the plate thickness direction, so that the fixture can be fixed to the plate. When the leg is rotated by a predetermined amount within the circular portion of the mounting hole, the engaging portion provided on the pressing wing portion side of the locking projection engages with the engaging member formed in the plate material separately from the notch. The hole is engaged from the back side. Thereby, rotation of the leg is prevented, and the fixture can be stably held in a state fixed to the plate.

For this reason, the fixing device of the present invention is completed by pushing the leg into the mounting hole and rotating it until the engaging portion engages with the engaging hole. Further, in the present invention, the rotation is prevented by the engagement portion engaging with the engagement hole from the back surface side of the plate material. Therefore, the engagement is released by pushing the leg portion into the mounting hole. Then, the leg can be rotated to align the locking projection with the notch, and the fixture can be removed from the plate. Furthermore, in the present invention, the position at which the engagement portion engages with the engagement hole can be constant regardless of the amount of deformation of the pressing wing portion. Irrespective of. Therefore, according to the fixture of the present invention, the work of drilling holes in the plate material and the work of removing it from the plate material can be facilitated, and the work efficiency thereof can be improved satisfactorily.

According to a second aspect of the present invention, in addition to the first aspect, the engagement hole is connected to the circular portion. In the present invention, since the engaging hole is connected to the circular portion of the mounting hole, the engaging hole can be integrated with the mounting hole. For this reason, in the present invention, it is only necessary to drill one hole for one fixture, and the drilling operation of the hole for the plate material can be further facilitated. Therefore, according to the present invention, in addition to the effects of the first aspect of the present invention, there is an effect that the work of drilling holes in the plate material is further facilitated, and the work efficiency can be further improved.

According to a third aspect of the present invention, there is provided the first or second aspect.
In addition to the configuration described above, the engaging portion is formed integrally with the locking projection on a surface of the locking projection on the pressing wing portion side. In the present invention, the engagement portion is formed integrally with the locking projection on the surface of the locking projection on the pressing wing side. For this reason, the engaging portion can be formed as a member integral with the locking projection. Therefore, according to the present invention, in addition to the effects of the first and second aspects of the present invention, there is an effect that the manufacturing of the engaging portion can be facilitated and the manufacturing cost of the entire fixture can be further reduced.

According to a fourth aspect of the present invention, in addition to any one of the first to third aspects, the shape of the surface of the engaging portion on the side of the pressing wing matches the shape of the engaging hole. The distance between the surface and the surface of the locking projection on the pressing wing portion side is equal to the thickness of the plate material.

In the present invention, the shape of the surface of the engaging portion on the side of the pressing wing portion (hereinafter simply referred to as the surface: the same applies to the plate member and the locking projection) also matches the shape of the engaging hole, and The distance between the surface of the joining portion and the surface of the locking projection matches the thickness of the plate material. As described above, in the present invention, since the distance between the surface of the engaging portion and the surface of the locking projection is equal to the plate thickness, when the engaging portion engages with the engaging hole, the surface of the engaging portion becomes a plate material. Are arranged on the same plane as the surface of the device, and are in a so-called flush state. In addition, since the shape of the surface of the engaging portion matches the shape of the engaging hole, there is no gap between the surface of the engaging portion and the surface of the plate.

Therefore, according to the present invention, in addition to the effect of the invention described in any one of the first to third aspects, an effect that good flatness of the surface of the plate material can be ensured is produced. According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, the engaging portion is connected to the outer periphery of the leg portion, and accordingly, the engaging hole is connected to the circular portion. I have.

In the present invention, the engaging portion is connected to the outer periphery of the leg portion, and the engaging hole is connected to the circular portion accordingly. For this reason, similarly to the second aspect of the invention, the engagement hole can be integrated with the mounting hole. Moreover, since the engaging portion is connected to the outer periphery of the leg portion, the effect of securing the flatness of the surface of the plate material according to the fourth aspect of the present invention is not lost.
Therefore, according to the present invention, in addition to the effect of the invention described in claim 4, there is an effect that the work of drilling holes in the plate material is further facilitated, and the work efficiency can be further improved.

[0019]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view showing a configuration of a fixing portion 1 in a fixing device to which the present invention is applied. The fixing portion 1 is integrally formed of resin together with, for example, a grip portion 52 shown in FIG. Have been. FIG. 1B is a plan view showing the shape of a hole formed in a plate for the fixing tool. As the member integrally formed above the fixed portion 1, in addition to the grip portion 52, a grip portion of another form (for example, a clamp-type grip portion), a spacer member for maintaining an interval between plate materials, and the like are considered. However, the present invention relates to a technique for fixing a fixing member to a plate material.
The embodiment will be described with a focus on the configuration described above.

The fixing portion 1 has a mounting hole 11 formed in a plate material.
A leg portion 3 rotatably inserted into the circular portion 11c of the first leg portion, a pair of locking protrusions 5 provided from the tip of the leg portion 3 and projecting in the outer peripheral direction by changing the direction by 180 ° from each other; Each of the locking projections 5 has a pair of pressing wings 7 which are provided so as to protrude in the outer peripheral direction while changing the direction by 90 ° from the base end of the projection 3. In addition, a portion sandwiched between the pair of pressing wings 7 at the base end of the leg 3 forms a flat base 9,
The above-described grip portion 52 and the like are integrally formed on the surface of the base portion 9.

The locking projection 5 projects in a substantially rectangular shape in plan view, and is inserted into a notch 11a, which is also formed in a substantially rectangular shape, around the circular portion 11c, so that the leg 3 is connected to the circular portion 11c. Can be inserted into In addition, the locking protrusion 5 has a locking protrusion main body 5a having substantially the same surface shape as the notch 11a.
(Corresponding to the locking projection of the present invention) and its surface (pressing wing 7
(A side surface) and an engaging portion 5b formed in a slightly smaller step shape. The engaging portion 5b is formed with a pair of notches 11a.
Is formed in a rectangular shape having the same shape as the cutout portion 11b (corresponding to the engagement hole of the present invention) formed on the outer periphery of the circular portion 11c by changing the direction by 90 °, and is connected to the outer periphery of the leg portion 3. . Further, the thickness of the engaging portion 5b is designed to be equal to the thickness of the plate material.

When the leg 3 is inserted into the circular portion 11c beyond a predetermined amount, the pressing wing 7 is brought into contact with the surface of the plate material to be elastically deformed. Reference numeral 5 includes the entirety including the engaging portion 5b on the rear surface side of the plate material. In this state, when the leg 3 is rotated by 90 ° in the circular portion 11c and the hand is released, the locking protrusion main body 5a is pressed against the back surface of the plate by the elastic force applied from the pressing wing portion 7, and the engaging portion 5b
Engages with the notch 11b from the back. For this reason, the locking protrusion main body 5a and the pressing wing portion 7 are in a state where the plate is sandwiched in the plate thickness direction, and the fixing portion 1 is fixed to the plate. Further, the engagement of the engaging portion 5b with the notch 11b prevents the leg 3 from rotating. Therefore, the fixture of the present embodiment including the fixing portion 1 can be stably held in a state fixed to the plate.

For this reason, in the fixture of the present embodiment, the attachment is completed by pushing the leg 3 into the attachment hole 11 and rotating it by 90 °. Further, in the fixing portion 1, the rotation is prevented by the engagement portion 5 b engaging with the notch portion 11 b from the back side of the plate material. Can be released, and by subsequently rotating the leg 3 by 90 °, the fixture can be removed from the plate material. Therefore, the work of detaching from the plate material can be facilitated, and the work efficiency can be improved satisfactorily.

Further, in the fixing portion 1, the position where the engaging portion 5b engages with the notch 11b can be constant regardless of the amount of deformation of the pressing wing portion 7, so that the mounting hole 11 of the notch 11b can be fixed. Can be kept constant regardless of the plate thickness. Moreover, only one mounting hole 11 having notches 11a and 11b need be formed in the plate member, and there is no need to provide an engaging hole 63 in addition to the mounting hole 61 as in the above-described conventional example. Therefore, the work of drilling holes in the plate material can be made extremely easy, and the work efficiency can be improved extremely well.

Further, the surface of the engaging portion 5b has a notch 11b.
And the thickness thereof is designed to be equal to the thickness of the plate material. For this reason, when the engaging portion 5b engages with the notch 11b, the surface of the engaging portion 5b is disposed on the same plane as the surface of the plate material, and the surface of the plate material and the surface of the engaging portion 5b are also provided. There is no gap. For this reason, the flatness of the plate material surface can also be ensured well. Also, the fixing part 1
Since it is not necessary to provide a projection on the pressing wing portion 7, the width of the pressing wing portion 7 can be designed to be narrow.

It should be noted that the present invention is not limited to the above embodiment at all, and can be implemented in various forms without departing from the gist of the present invention. For example, in the above embodiment, the locking protrusion main body 5a and the engaging portion 5b are formed integrally, but by forming a gap between the two as in the fixing portion 21 shown in FIG. , A locking projection 25 (having the same shape as the locking projection main body 5a) and an engaging portion 26 (engaging portion 5b).
May be configured separately from the bottom. In the configuration of the fixing unit 21, the same components as those of the fixing unit 1 are denoted by the same reference numerals as those used in FIG. 1, and the detailed description is omitted (the same applies hereinafter). In this case, the mounting holes 11 formed in the plate member can be the same as those in the above-described embodiment, as shown in FIG.

In this case, by reducing the thickness of the engaging portion 26, the weight of the entire fixture can be reduced and the amount of resin used can be saved. However, in the fixed portion 1, the engaging portion 5b and the locking protrusion main body 5a are integrated members (locking protrusion 5).
Therefore, the manufacturing of the engaging portion 5b can be facilitated, and the manufacturing cost of the entire fixture can be further reduced.

In the fixing part 31 shown in FIG.
The locking projection 35 is formed by integrally molding a columnar engaging portion 35b near the tip of the locking projection main body 35a (having the same shape as the locking projection main body 5a). In this case, as shown by a solid line in FIG. 3 (B), it is desirable that the tip of the notch 11b be formed in an arc shape in accordance with the outer shape of the engagement portion 35b.

Further, as shown by a two-dot chain line in FIG. 3 (B), the mounting hole 41 having only the notch 11a around the circular portion 11c and the outer shape of the engaging portion 35b, which is separate from the mounting hole 41, coincide with the outer shape. A pair of circular engagement holes 43 may be formed. In this case, it is necessary to drill three holes in the plate for one fixture, but it is not easy to remove the fixture, and it is not necessary to change the position of the holes according to the plate thickness. The same effects as in the above embodiments are obtained. Further, in this case, the flatness of the surface of the plate material can be more favorably secured as compared with the case where the mounting hole 11 indicated by the solid line in FIG. 3 is formed.

Further, the engaging portions 5b, 26, or 35
b may be provided only on one of the locking projections 5, 25, or 35, and only one notch 11b may be provided so that the base 9 always faces in a fixed direction when the fixing tool is mounted on the plate. Often, the pressing wings or locking projections may project in three or more directions.

[Brief description of the drawings]

FIG. 1 is a perspective view and a plan view illustrating a fixing portion and a mounting hole of a fixing device to which the present invention is applied.

FIGS. 2A and 2B are a perspective view and a plan view illustrating another form of a fixing portion and a shape of a mounting hole thereof.

FIG. 3 is a perspective view and a plan view illustrating still another form of a fixing portion and a mounting hole.

FIG. 4 is a front view, a bottom view, and a plan view showing the shape of a fixture and a mounting hole according to a conventional example.

[Explanation of symbols]

1, 21, 31, 51: fixing portion 3, 53: leg portion 5, 25, 35, 55: locking projection 5a, 35a
... Main body of locking projection 5b, 26, 35b ... Engagement part 7, 57 ... Pressing wing part 9 ... Base part 11, 41,
61 ... mounting holes 11a, 11b, 61a ... notches 11c, 61
c: Circular part 43, 63 ... Engagement hole 50: Fixture 52: Grip part 52a: Arm 59: Projection

Claims (5)

[Claims] 1. A leg portion of a mounting hole formed in a plate having a substantially circular portion and a notch formed around the circular portion, the leg portion being rotatably inserted into the circular portion. A pressure wing portion which is provided so as to protrude from the leg portion in the outer peripheral direction, and which comes into contact with the surface of the plate material to elastically deform when the leg portion is inserted into the mounting hole by a predetermined amount or more; A locking projection which is inserted in the notch of the mounting hole when the leg is inserted, and which is disposed on the back side of the plate when the leg is inserted by a predetermined amount or more. A fixing tool provided on the pressing wing side of the locking projection, and disposed on the back side of the plate when the leg is inserted beyond the predetermined amount, When the leg is rotated by a predetermined amount in the circular portion, the notch is formed in the plate around the circular portion of the mounting hole. Fixture, characterized in that the engagement portion for preventing the rotation of the leg portion includes a by engaging from the rear surface side engaging hole which are separately bored. 2. The fixture according to claim 1, wherein said engagement hole is connected to said circular portion. 3. The fixing device according to claim 1, wherein the engaging portion is formed integrally with the locking projection on a surface of the locking projection on the pressing wing side. Utensils. 4. The shape of the surface of the engaging portion on the pressing wing portion side matches the shape of the engaging hole, and the shape of the surface and the surface of the locking projection on the pressing wing portion side is defined. The fixture according to any one of claims 1 to 3, wherein an interval is equal to a thickness of the plate material. 5. The method according to claim 1, wherein the engaging portion is connected to an outer periphery of the leg portion,
The fixing device according to claim 4, wherein the engagement hole is connected to the circular portion accordingly.