JP2011179617A - Screw component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw component which covers the head of a screw by simple work and also does not fall out of the head of the screw. <P>SOLUTION: This screw part 1 covers and hides the head of a screw penetrating a body to be fastened and fastened. The screw part includes: a plate-like washer part 10 where a shaft part of the screw is penetrated to abut on the lower end of the head of the screw; a plurality of movable pieces 20 formed radially on the outer peripheral part of the washer part 10; and a hinge part 30 formed at the boundary between the washer part 20 and the movable pieces 20. The plurality of movable pieces 20 are put in the closed state by the deformation of the hinge part 30 to thereby cover the head of the screw. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a screw component, for example, a screw component that covers the heads of screws and bolts.

  Conventionally, as shown in FIG. 9, a head cap 100 that is externally fitted to a head (screw head) 200 a of a screw (or bolt) 200 and encloses the screw head 200 a is known for various applications. It's being used.

For example, the head cap 100 is used to prevent the rust and corrosion of the screw 200 fastened to a product or a building, or to prevent the screw 200 from loosening. The head cap 100 is used to protect the screw head 200a from external impact.
Further, since the screw head 200a can be concealed by the head cap 100, the head cap 100 is used for improving the design of a product or the like with the screw 200 fastened or for preventing mischief.
Furthermore, the head cap 100 is used to insulate heat transfer through the screw 200 or prevent noise from being introduced through the screw 200 into a product such as an electronic device to which the screw 200 is fastened. Yes.
As with the head cap shown in FIG. 9, a protective cap that covers the end of a screw or bolt is disclosed in, for example, Patent Document 1.

JP-A-9-291705

However, since the head cap of the prior art shown in FIG. 9 is attached to the head of the fastened screw (or bolt) by retrofitting work, workability is poor and work is troublesome. Has technical challenges. In particular, when the number of screws (or bolts) to which the head cap is to be attached is large, it is a heavy work load.
Further, since the head cap is only fitted on the screw head, the head cap may come off the screw head and fall off.

  The present invention has been made to solve the above technical problem, and an object of the present invention is to cover the screw head by a simple operation and not to fall off the screw head. It is to provide screw parts.

The present invention made to solve the above-mentioned problems is a screw part that covers and hides the head of a screw fastened to a fastened body, the shaft of the screw being inserted, and the head of the screw A plate-shaped washer portion that comes into contact with the lower end of the plate, a plurality of movable pieces formed radially on the outer periphery of the washer portion, the lower end portion being located below the washer portion, and the washer portion and the movable piece. A hinge part that is formed at a boundary and is deformed when the washer part is displaced downward, and rotates the movable piece, and the plurality of radially formed movable pieces are closed by the deformation of the hinge part. The screw head is covered and the screw head is covered.
Here, each of the plurality of movable pieces includes a support portion that protrudes obliquely downward from the outer peripheral portion of the washer portion, and extends upward from an end portion of the support portion and bends toward the center of the washer portion. A plurality of movable pieces formed radially by the hinge portion being deformed when the end portion of the support portion is in contact with the body to be fastened and the washer portion is displaced downward. Is preferably closed and the screw head is covered.

With the above configuration, the shaft portion of the screw is inserted into the washer portion of the screw component, and the shaft portion of the screw is screwed into the fastened body, whereby the washer portion is displaced downward and the hinge portion is deformed. Due to the deformation of the hinge portion, the movable piece rotates, the plurality of radially formed movable pieces are closed, and the screw head is covered.
Therefore, if the screw part of the present invention is used, the head of the screw can be covered and concealed as the screw is tightened. In comparison, the labor of enveloping the screw head is reduced.
Moreover, since the screw component of this invention comes to be fixed to a to-be-fastened body with a screw, after attaching to a screw, it does not fall from the head part of a screw.

Moreover, it is desirable that the washer part, the movable piece, and the hinge part are integrally formed of an elastically deformable material.
With the above configuration, in the fastening process in which the screw is screwed with a tool such as a screwdriver, the movable piece comes to elastically deform when the movable piece comes into contact with the tool. Therefore, the screwing operation is performed until the screw is fastened to the fastened body. Can continue. Further, when the screw fastening operation is completed, the movable piece comes into contact with the tool, but the tool can be easily pulled out because it is formed of an elastically deformable material.

Further, when the plurality of movable pieces are closed, it is desirable that an opening of a predetermined size is formed above the head of the screw to be encapsulated.
According to the above configuration, since the tool can be inserted through the opening of the screw component fixed to the body to be fastened together with the screw and can be fitted into the screw hole of the head of the screw, the screw (and screw component) can be easily removed. Can be done.

  ADVANTAGE OF THE INVENTION According to this invention, the screw | thread component which can cover the screw | thread head by simple operation | work and does not fall out from the screw | thread head can be provided.

It is a perspective view of the screw component concerning one embodiment of the present invention. It is a top view of the screw component concerning one embodiment of the present invention. It is sectional drawing which shows the AA cross section of the screw component shown in FIG. It is sectional drawing which shows the state which the movable piece of the screw component shown in FIG. 3 closed. It is a schematic diagram which shows the attachment procedure of the screw component concerning one Embodiment of this invention. It is a top view which shows the state which the attached screw component covered the screw head. It is the schematic diagram which showed the modification of the movable piece of the screw component concerning one Embodiment of this invention. It is the schematic diagram which showed the modification of the movable piece of the screw component concerning one Embodiment of this invention. It is sectional drawing which shows the head cap of the screw of a prior art.

Hereinafter, a screw component according to an embodiment of the present invention will be described with reference to the drawings.
In addition, the screw component of this embodiment is a component having a function of a washer, and has a function of covering and hiding the head of the screw (screw head). In the fastening operation of the screw, the head portion of the screw can be covered together with the fastening of the screw.

First, the structure of the screw component 1 according to the present embodiment will be described with reference to FIGS.
FIG. 1 is a perspective view of a screw component according to an embodiment of the present invention. FIG. 2 is a plan view of the screw component according to the embodiment of the present invention. 3 is a cross-sectional view showing an AA cross section of the screw component shown in FIG. FIG. 4 is a cross-sectional view showing a state in which the movable piece of the screw component shown in FIG. 3 is closed. FIG. 5 is a schematic diagram illustrating a procedure for attaching the screw component, and FIG. 5A is a schematic diagram illustrating the screw component 1 before being attached to the screw 50, and FIG. 5 (d) is a schematic view showing a process of fastening the screw 50 to the fastened body G by inserting the screw 50 into the screw component 1 and screwing the nut 54 into the screw 50.

As shown in FIGS. 1, 2, and 5, the screw component 1 is formed in a rectangular plate shape through which the shaft portion 50 b of the screw 50 is inserted and abutted with the lower end of the head portion (screw head) 50 a of the screw 50. The washer part 10, the plurality of petal-like movable pieces 20 formed radially on the outer periphery of the washer part 10, and the hinge part (thin-walled hinge part) 30 formed at the boundary between the washer part 10 and the movable piece 20. And.
And when the lower end part of the some movable piece 20 receives external force from the to-be-fastened body G, the hinge part 30 deform | transforms. As a result, the plurality of movable pieces 20 are configured to rotate and enclose the screw head 50a.
In addition, it is desirable that the washer part 10, the movable piece 20, and the hinge part 30 of the screw part 1 are integrally formed of an elastically deformable material (for example, synthetic resin or metal).

Specifically, the washer portion 10 has a through hole 10a through which the shaft portion 50b of the screw 50 is inserted at the center thereof, and when the shaft portion 50b of the screw 50 is inserted into the through hole 10a, The lower end of the screw head 50a comes into contact with one surface (upper surface).
Moreover, the hinge part 30 is comprised by making the boundary part of the movable piece 20 and the washer part 10 into thin wall shape, and is supporting the movable piece 20 so that rotation is possible.

Further, as shown in FIG. 3, each movable piece 20 extends upward from a support portion 21 that protrudes obliquely downward from the outer periphery measurement portion of the washer portion 10, and one end portion (tip portion) of the support portion 21. And a covering portion 22 that is curved toward the center of the washer portion 10.
Further, the envelope portion 22 is formed so as to rotate around one end portion (tip end portion) of the support portion 21 when the hinge portion 30 is deformed.
In the example shown in the figure, the support portion 21 is formed in a tapered shape having a thickness dimension that decreases from the base end portion toward the tip end portion, but is not particularly limited thereto. For example, the support portion 21 may be formed with the same thickness dimension from the base end portion toward the distal end portion.

When the screw component 1 is not used (the screw 50 is not attached to the screw component 1), one end portion (tip portion) of the support portion 21 is below the washer portion 10. In addition to being positioned, the covering portion 22 constituting the movable piece 20 is disposed in a substantially vertical direction with respect to the upper surface of the washer portion 10, and is in a state of opening the upper side of the washer portion 10 (open state).
Thus, in the open state of the screw part 1, the washer part 10 is disposed above the support part 21, and the plurality of movable pieces 20 formed on the outer peripheral part of the washer part 10 are flower-like (flowering). The upper side of the washer 10 is open.

Further, when a downward external force F (screwing force) from the screw 50 acts on the washer portion 10 of the screw component 1 in the opened state, and the washer portion 10 is displaced downward, one end of the support portion 21 is formed. Since the portion (tip portion) is in contact with the fastened body G, the hinge portion 30 is deformed, and the covering portion 22 (movable piece 20) is rotated around the hinge portion 30.
Specifically, as shown in FIG. 4, due to the deformation of the hinge portion 30, the support portion 21 constituting the movable piece 20 operates to a position where the bottom surface thereof is flush with the bottom surface of the washer portion 10. In addition, due to the deformation of the hinge part 30, the covering part 22 constituting the movable piece 20 operates to a position opposite to the upper surface of the washer part 10, and covers the upper side of the washer part 10 (closed state). Become.
Thus, in the closed state of the screw component 1, the plurality of movable pieces 20 are closed to form a bud shape, and the upper side of the washer portion 10 is covered.

  Next, operation | movement of the screw component 1 of this one Embodiment is demonstrated using FIG. 3 thru | or FIG. 5 mentioned above, and FIG. FIG. 6 is a plan view showing a state in which the screw component of the present embodiment covers the screw head. In FIG. 5, the washer 52 is used. However, this is merely an example, and the washer 52 may not be used. When the washer 52 is not used, the washer portion 10 of the screw part 1 functions as the washer 52.

Specifically, first, as shown in FIG. 5 (a), the screw part 1, the screw 50, the washer 52 and the nut 54 in the open state are prepared, and as shown in FIG. 5 (b), the screw part 1 is prepared. The shaft portion 50 b of the screw 50 is inserted into the through hole 10 a (see FIGS. 3 and 4) of the washer portion 10, and the shaft portion 50 b is inserted into the screw hole of the fastened body G via the washer 52.
Then, the nut 54 is screwed onto the shaft portion 50a of the inserted screw 50 through a washer.

  Next, as shown in FIG. 5B and FIG. 5C, the driver W is inserted from above the screw part 1 in the open state, and the screwdriver W is inserted into the screw hole of the screw head 50a. The end of the shaft is fitted, the nut 54 is pressed, the driver W is rotated in a predetermined direction (the direction in which the screw 50 is fastened (clockwise)), and the screw 50 is screwed into the fastened body G.

When the screw 50 is rotated (screwed in) by the driver W in this way, the screw head 50a of the screw 50 moves downward, and the washer portion 10 is displaced downward. At this time, since one end portion (tip portion) of the support portion 21 is in contact with the fastened body G (washer 52), the hinge portion 30 is deformed, and the covering portion 22 (movable piece 20) is centered on the hinge portion 30. ) Rotate.
And rotation of the covering part 22 (movable piece 20) advances, and the covering part 22 which comprises the movable piece 20 comes to cover the whole upper surface of the screw head 50a. That is, as shown in FIGS. 5B to 5D, according to the rotation of the screw 50, the plurality of petal-like movable pieces 20 in the open state are gradually closed to cover the screw head 50a.

Here, in FIG. 5D, since the shaft of the driver W is fitted in the screw hole of the screw head 50a, the tip of the covering portion 22 of the movable piece 20 comes into contact with the shaft of the driver W, and the covering is performed. The portion 22 is deformed and is not completely closed.
Then, in the state shown in FIG. 5D, when the driver W is pulled out from the screw head 50a, the deformation of the covering portion 22 is eliminated, and the screw head 50a is closed as shown in FIG. The mounting operation of the screw part 1 is completed.
In addition, since the screw component 1 of this embodiment is formed with the material which can be elastically deformed as mentioned above, in the state shown in FIG.5 (d), the driver W can be pulled out easily.

Thus, when this screw component 1 is used, the screw head 50a can be covered and concealed as the screw 50 is fastened, so that the above-described conventional head cap 100 of the conventional type (see FIG. 9). Compared to the above, the labor of enveloping the screw head 50a is reduced.
Further, since the screw component 1 is fixed to the fastened body G together with the screw 50 (because it is sandwiched between the screw head 50a and the fastened body), after being attached to the screw 50, from the screw head 50a. Never fall.

  Moreover, although it does not specifically limit about the manufacturing method of the screw component 1 of this embodiment, For example, it can manufacture by resin injection molding or press molding.

As described above, according to the screw component 1 of the present embodiment, in the fastening process of the screw 50, the screw head 50a can be covered and hidden together with the fastening of the screw 50.
Therefore, according to this embodiment, compared with the above-described conventional retrofitted head cap 100 (see FIG. 9), the labor of enveloping the screw head 50a is reduced.

Moreover, since the screw component 1 of this embodiment is being fixed to the to-be-fastened body with the screw 50 (because it is clamped between the screw head 50a and the to-be-fastened body), after attaching to the screw 50, the screw head It does not fall from 50a.
Moreover, since the movable piece 20 will be in a closed state in the state fixed to the to-be-fastened body with the screw 50, the screw component 1 of this embodiment cannot be removed easily and can be removed by mischief. There is little nature.

In addition, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible within the range of the summary.
For example, in the example shown in FIG. 5, the washer 52 and the nut 54 are used for fastening the screw 50, but the screw 50 may be directly fastened to the fastened body without using the washer 52 and the nut 54. The same effects as those of the above-described embodiment are realized.

For example, in the embodiment described above, the washer portion 10 of the screw component 1 is formed in a rectangular plate shape, but the shape of the washer portion 10 is merely an example. For example, the washer portion 10 may be formed in a disc shape.
In the embodiment described above, the number of the movable pieces 20 constituting the screw component 1 is four, but the number of the movable pieces 20 is merely an example.

  In the above-described embodiment, the screw head 50a is covered and hidden by the screw component 1, but the present invention is not particularly limited thereto. If the part is the same as the screw 50 (bolt, screw, etc.), it is possible to hide the head using the screw part 1 of the present embodiment.

In the above-described embodiment, the covering portion 22 constituting the movable piece 20 is formed in a curved shape, but is not particularly limited thereto. The enveloping part 22 should just be made into the shape which can envelop the screw head 50a.
For example, as shown in FIG. 7, the covering portion 23 constituting the movable piece 20 extends upward from the distal end portion of the support portion 21 and is bent in a substantially right angle toward the center side of the washer portion 10. It may be formed. In addition, in FIG. 7, the example which the support part 21 is formed with the same thickness dimension toward the front-end | tip part from the base end part is shown. With this configuration, as shown in the figure, the outer periphery of the hexagonal screw head 50a1 can be efficiently covered.

Further, in the above-described embodiment, when the plurality of radially formed movable pieces 20 are closed, the entire upper surface of the screw head 50a is covered by the covering portion 22 of each movable piece 20. However, the present invention is not limited to this.
For example, as shown in FIG. 8, when the plurality of radially formed movable pieces 20 are closed, the screw component 1 is positioned above the screw hole 50c formed in the screw head 50a. An opening 24a having a size capable of inserting a tool such as the above may be formed. In this case, the covering portion 24 constituting the movable piece 20 has a shorter length from one end portion (tip portion) of the support portion 21 than the above-described covering portion 22 (see FIGS. 1 to 6). Yes.
And according to the said structure, since the screwdriver 50 can be inserted in the opening 24a of the screw component 1 fixed to the to-be-fastened body with the screw 50, and it can fit in the screw hole 50c, removal of the screw 50 (and screw component 1) Can be done easily.

1 Screw parts 10 Washers (screw parts)
20 Movable piece (screw part)
21 Supporting part (movable piece (screw part))
22, 23, 24 Covering part (movable piece (screw part))
24a Opening (screw parts)
30 Hinge (screw parts)
4 units 40 projecting pieces (units)
50 screw 50a screw head (screw)
50a1 Screw head (screw)
50b Shaft (screw)
50c Screw hole (screw)
52 Washer 54 Nut

Claims (4)

A screw component that covers and hides the head of a screw to be fastened to a fastened body,
A plate-shaped washer portion through which the shaft portion of the screw is inserted and abutted with the lower end of the head portion of the screw;
A plurality of movable pieces formed radially on the outer periphery of the washer, the lower end being positioned below the washer;
A hinge part that is formed at a boundary between the washer part and the movable piece, is deformed when the washer part is displaced downward, and rotates the movable piece;
A screw part, wherein a plurality of radially formed movable pieces are closed by the deformation of the hinge part, and a screw head is covered. Each of the plurality of movable pieces includes a support portion that protrudes obliquely downward from an outer peripheral portion of the washer portion, and a covering that extends upward from an end portion of the support portion and is bent toward the center of the washer portion. And
When the end of the support part comes into contact with the body to be fastened and the washer part is displaced downward, the hinge part is deformed, and a plurality of radially formed movable pieces are closed, The screw part according to claim 1, wherein the head of the screw is encased.   The screw part according to claim 1 or 2, wherein the washer part, the movable piece, and the hinge part are integrally formed of an elastically deformable material.   4. When the plurality of movable pieces are closed, an opening having a predetermined size is formed above the head of the screw to be encased. Screw parts according to any of the above.

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