JP2000074032A - Holding structure of screw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect together, fix, or detach from each other between parts without letting fall a screw into a device or the like by providing an opening part capable of inserting a tool for rotating a screw, and claw parts for fixing to a part to be fastened. SOLUTION: A cross recessed head screw 1 is inserted into the hole provided on a base sheet metal part 2 and for inserting the cross recessed head screw 1 therein. The fixing pawls of a cover part 3 are hooked with fixing grooves provided on the base sheet metal part 2 and for fixing the cover part 3. Hereby, the cover part 3 is built in and fixed to the base sheet metal part 2. By this assembling and fixing, a work fastening the cross recessed head screw 1 is executed under the condition of covering the cross recessed head screw 1 with the cover part 3. As a result, the cross recessed head screw 1 is surrounded with the parts of the base sheet metal part 2 and the cover part 3 not to fall or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to connection and fixing of components using screws, and more particularly to a screw holding structure capable of connecting and fixing components without removing the screws from the components. .

[0002]

2. Description of the Related Art Conventionally, in order to prevent loosened screws from being disconnected when disconnecting parts connected via screws, for example, a 96-A Tochigiya general catalog
The screw removal washer described in the model number TM-147 is used. However, in this method, when an external force is applied to the tip of the foot of the screw, the retaining washer is easily removed, and the screw may come off. The retaining washer is made of plastic. Therefore, there is also a disadvantage that the electrical connection between the components cannot be reliably obtained by being sandwiched between the fixed components.

[0003] Therefore, in a situation such as when a unit is mounted inside a housing, the unit is mainly fixed using only screws. In this case, the screw is attached and detached by rotating using a tool such as a screwdriver. However, there is a risk that the screws may be accidentally dropped into the inside of the device when the tool or the like is attached or detached. Further, in a device or the like that requires non-stop operation, it is essential to perform maintenance while operating. In the case of such a device, there is a risk that the dropped screw may enter the inside of the device and stop the device due to a short circuit or the like.

[0004] Such a conventional example is shown using a perspective view of FIG.

FIG. 8 shows a state in which the unit 26 is mounted in the unit storage box 44. Guide rail 5
Is provided to guide the unit 26 to a mounting position in the unit storage box 44. After the unit 26 is guided by the guide rail 5, the unit storage box 4
4 is implemented. The screw 1 is used to fix the unit 26 to the unit storage box 44.

At both ends of the rectangular parallelepiped unit 26, holes for inserting the screws 1 are formed. The screw 1 is passed through the hole and attached to the unit storage box 44 using a driver. Thereby, the unit 26
And the unit storage box 44 are connected and fixed.
When removing the unit 26, the screw 1 is removed from the unit storage box 44 using a screwdriver. Thereafter, the unit 26 can be extracted from the unit storage box 44.

However, when the screw 1 is attached and detached using a driver, there is a risk that the screw 1 may be dropped by mistake. If the screw 1 is dropped, there is a danger that the dropped screw 1 will enter the inside of the device and stop the device due to a short circuit or the like.

[0008]

In the above prior art, no consideration is given to the screw holding structure and the like. Therefore,
When attaching and detaching screws using a screwdriver, there is a risk of falling into the device.

An object of the present invention is to provide a screw holding structure capable of easily connecting and fixing or dividing parts or units without dropping the screw.

[0010]

In order to solve the above-mentioned problems, the present invention provides a cover member having an insertion hole, which is an opening for inserting a tool for rotating a screw, which is a first cover. Fix to the fastening parts. With the cover component surrounding the screw, the screw is fastened to the female screw provided on the second workpiece using a tool. Thereby, the first
Is connected to the second part to be fastened.

The second part to be fastened has a positioning mark around a screw hole provided in the part itself.

The first part to be fastened has a through hole around the hole for inserting the screw, so that the positioning mark provided on the second part to be fastened can be seen.
The first component to be fastened has a fixing groove for fixing the cover component.

The cover part has a slit-shaped hole or a groove-shaped notch for visually confirming the tightening of the screw.

[0014]

(Embodiment 1) An embodiment of the present invention will be described below with reference to FIGS. 1, 2 and 3. FIG.

FIG. 1 is an exploded perspective view of each part of the screw holding structure of the present invention. FIG. 2 is a perspective view after the components of FIG. 1 are assembled. Each drawing is composed of a screw 1 having a cross-hole, a base sheet metal part 2, a cover part 3, and a fixed end sheet metal part 4.

The cross-headed screw 1 has a cross-shaped groove in the head of the screw, and is fastened in a state of penetrating the hole of the washer. In addition, the screw 1 with a cross hole has
A washer is incorporated in the neck part in advance.

The base sheet metal part 2 is a part which is to be fixed to another part using the cross-headed screw 1.

The cover part 3 has a substantially rectangular parallelepiped shape.
The cover part 3 covers the cross-shaped screw 1 when fastening the cross-shaped screw 1 using a tool such as a screwdriver. This makes it possible to prevent the screw 1 having a cross-shaped hole from dropping during the fastening operation. Cover parts 3
Are specific to the present invention. The cover part 3 has a hole. This hole has a diameter smaller than the washer diameter of the cross-headed screw 1 and has a size such that a tip of a tool such as a screwdriver can be inserted and rotated.

The fixed sheet metal part 4 is a part to be fastened to the base sheet metal part 2 using the screw 1 with a cross hole.

The outline of the fastening operation using the cross-headed screw 1 shown in FIGS. 1 and 2 will be described. The screw 1 with a cross-shaped hole is replaced with the screw 1 with a cross-shaped hole
Insert into the hole for inserting. A fixing claw of the cover part 3 is hooked on a fixing groove for fixing the cover part 3 provided on the base sheet metal part 2. Thereby, the cover part 3 is assembled and fixed to the base sheet metal part 2.

By this assembling and fixing, the screw 1
Is performed in a state where the cross-shaped screw 1 is covered with the cover part 3. As a result, as shown in FIG. 2, the cross-headed screw 1 is not surrounded by the base sheet metal part 2 and the cover part 3 and does not drop. The cross recessed screw 1 is screwed into the fixed sheet metal part 4 using a tool such as a screwdriver. By this screwing, the base sheet metal 2 and the fixed-end sheet metal part 4 are easily connected and fixed.

FIG. 3 is a sectional view taken along line AA of FIG. The structure of the cross section will be described with reference to FIG.

FIG. 3A is a sectional view showing a state in which the base sheet metal 2 to which the cover part 3 is fixed is set in the vicinity of the fixed sheet metal part 4.

FIG. 3B is a sectional view after the base sheet metal 2 and the fixed-end sheet metal part 4 are connected and fixed.

As shown in FIG. 3A, when the base sheet metal 2 is set near the fixed-end sheet metal part 4, the cross-hole screw 1 contacts the fixed-end sheet metal part 4 and moves upward.
However, the washer of the cross-headed screw 1 comes into contact with the hole provided in the cover part 3. Therefore, the cross-shaped screw 1 does not fall.

In the state shown in FIG. 3 (a), the screw 1 with a cross hole is rotated using a tool such as a screwdriver. By rotating the screw 1, the screw 1 with the cross-shaped hole is
Insert the female screw prepared in step 2. The state shown in FIG. 3B is achieved by fastening the cross-shaped screw 1 to the female screw. As shown in FIG. 3 (b), the screw 1 with a cross hole enters the female screw of the fixed sheet metal part 4, and the base sheet metal part 2 and the fixed sheet metal part 4 are securely interconnected and mutually fixed.

The cover part 3 is provided with a slit-shaped hole extending from a hole for inserting the cross-headed screw 1. The slit-shaped hole has an effect that it can be visually confirmed whether or not the cross-headed screw 1 is securely tightened.

As described above, according to the present embodiment, the components can be connected and fixed without dropping the cross-headed screw 1 from the components.

Next, a case where the present invention is applied to a unit will be described.

FIG. 7 is a perspective view of the mounting structure of the unit according to this embodiment. FIG. 7 illustrates the unit 21, the unit storage box 44, and the guide rail 5.

The unit 21 has this embodiment at both ends of a unit 26 having a rectangular parallelepiped shape. The unit storage box 44 and the guide rail 5 are the same as those described in FIG.

The unit 21 is mounted at a mounting position in the unit storage box 44 by being guided by the guide rail 5. Initially, the cross-headed screws 1 at both ends of the unit 26
The arrangement shown in the sectional view of FIG. Using a tool such as a screwdriver, the screw 1 with a cross hole is rotated. By this rotation, the cross-headed screw 1 enters the female screw provided in the unit storage box 44. As a result,
The arrangement shown in the sectional view of FIG.
Is securely connected and fixed to the unit storage box 44.

Thereafter, when removing the unit 21 from the unit storage box 44, the screw 1 with a cross-shaped hole is rotated counterclockwise using a tool such as a screwdriver. By rotating the screw, the cross-headed screw 1 is removed from the female screw provided in the unit storage box 44. However, the cross-headed screw 1 does not drop from the unit 21 as described above. Therefore, the screw 1 with a cross hole is
The unit 21 can be removed from the unit storage box 44 while being integrated with the unit 1.

Therefore, the screw 1 with a cross-shaped hole can easily connect and fix or remove components or units without dropping. It is also possible to prevent the device or the like from being damaged due to the drop of the cross-shaped screw 1.

Further, according to this embodiment, it is not necessary to perform the fastening operation while holding the screw 1 with the cross hole by hand, and the operation can be performed with one hand.

(Embodiment 2) Another embodiment of the present invention will be described with reference to FIGS. 4, 5 and 6. FIG.

FIG. 4 is an exploded perspective view of each part of the screw holding structure of the present invention. FIG. 5 is a perspective view after the components of FIG. 4 have been assembled. Each figure shows a cross-shaped screw 1, a base sheet metal part 2, a hole 2a for position deviation check, a cover part 3, a fixed end sheet metal part 4, and a dent 4a for position deviation check.
It consists of.

Among these, the screw 1 having a cross hole, the base sheet metal part 2, and the fixed end sheet metal part 4 are the same as those in the first embodiment. The dents 4a for position misalignment check
This is a check dent for aligning the base sheet metal part 2 and the fixed sheet metal part 4. The position shift checking hole 2a is a through hole for positioning the base sheet metal part 2 and the fixed end sheet metal part 4, and the position shift is checked based on the positional relationship with the position check dent 4a. It is possible to check. It should be noted that a dent 4 for position misalignment check
a may be a recognition mark for positioning written using a pen or the like.

In each of the drawings, the cover part 3 is not provided with a slit-like hole unlike the one of the first embodiment. Instead of the slit-shaped hole, a groove-shaped notch is provided on the side surface of the cover part 3. With this groove-shaped notch, it is possible to visually confirm whether or not the cross-shaped screw 1 is securely tightened. Therefore, as in the first embodiment, a slit-shaped hole may be provided.

Further, a part of the base sheet metal part 2 is folded into the screw 1 having the cross hole. By making the height of the fold higher than the height of the cover component 3 as shown in each figure, there is an effect of protecting the cover component 3 from external force. However, the present embodiment is not limited to the case where the fold is present, and the present invention can be similarly applied without the fold.

The outline of the fastening operation using the cross-headed screw 1 from FIG. 4 to FIG. 5 will be described. The screw 1 with the cross-shaped hole is replaced with the screw 1 with the cross-shaped hole provided in the base sheet metal part 2.
Insert into the hole for inserting. A fixing claw of the cover part 3 is hooked on a fixing groove for fixing the cover part 3 provided on the base sheet metal part 2. Thereby, the cover part 3 is assembled and fixed to the base sheet metal part 2.

By this assembly and fixing, the screw 1
Is performed in a state where the cross-shaped screw 1 is covered with the cover part 3. As a result, as shown in FIG. 2, the cross-headed screw 1 is not surrounded by the base sheet metal part 2 and the cover part 3 and does not drop. The cross recessed screw 1 is screwed into the fixed sheet metal part 4 using a tool such as a screwdriver. By this screwing, the base sheet metal 2 and the fixed-end sheet metal part 4 are easily connected and fixed.

In this fastening operation, the base sheet metal part 2
The hole for inserting the cross-recessed screw 1 provided in
It is closed by the cross-headed screw 1. Therefore, there is no misalignment between the hole for inserting the cross-threaded screw 1 provided on the base sheet metal part 2 and the female screw provided on the fixed end sheet metal part 4.

Therefore, the fixing tip sheet metal part 4 is provided with a dent 4a for position displacement check. Further, in the base sheet metal part 2, a hole 2a for position displacement check is provided in the vicinity of the place where the cover part 3 is fixed. The dents 4a for position misalignment check and the holes 2a for position misalignment check are provided at pre-measured points for alignment. The dent 4a for positional deviation check and the hole 2a for positional deviation check have a positional relationship associated with each other. Therefore, appropriate alignment can be performed. further,
By visually checking the positional deviation with the dent 4a for positional deviation check through the positional deviation checking hole 2a, the screw 1 with the cross hole and the female screw provided on the fixed end sheet metal part 4 are indirectly connected. It is possible to confirm the positional deviation between the two.

FIG. 6 is a sectional view taken along the line BB of FIG. The structure of the cross section will be described with reference to FIG.

FIG. 6A is a sectional view showing a state in which the base sheet metal 2 to which the cover part 3 is fixed is set in the vicinity of the fixed end sheet metal part 4.

FIG. 6B is a cross-sectional view after the base sheet metal 2 and the fixed sheet metal part 4 are connected and fixed.

As shown in FIG. 6 (a), when the base sheet metal 2 is set near the fixed-end sheet metal part 4, the screw 1 with the cross hole contacts the fixed-end sheet metal part 4 and moves upward.
However, the washer of the cross-headed screw 1 comes into contact with the hole provided in the cover part 3. Therefore, the cross-shaped screw 1 does not fall.

In the state shown in FIG. 6 (a), a dent 4a for position deviation check is formed through a hole 2a for position deviation check.
And visually observe the displacement. Thereby, the position adjustment between the cross-threaded screw 1 and the female screw provided on the fixed sheet metal part 4 is performed. After the alignment, the screw 1 with a cross hole is rotated using a tool such as a screwdriver while performing the alignment so that the positional shift does not occur again. By this rotation, the cross-threaded screw 1 is inserted into the female screw prepared for the fixed sheet metal part 4. Cross recessed screw 1
6 reaches the state shown in FIG. 6B by being fastened to the female screw. As shown in FIG.
Penetrates into the female screw of the fixed-end sheet metal part 4 to securely interconnect and fix the base sheet-metal part 2 and the fixed end sheet metal part 4 to each other.

It is visually confirmed whether or not the cross-shaped screw 1 is securely fastened through the groove-shaped notch provided in the cover part 3.

Also according to the present embodiment, the cross-headed screw 1 can connect and fix the components without falling off the components.

[0052]

According to the present invention, it is possible to connect and fix or remove the components without dropping the screws into the inside of the apparatus or the like. Therefore, there is no danger of stopping the device or the like.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of components of a screw holding structure according to the present invention.

FIG. 2 is a perspective view after assembling the components of FIG. 1;

FIG. 3 is a cross-sectional view taken along line AA shown in FIG.

FIG. 4 is an exploded perspective view of components of the screw holding structure of the present invention.

FIG. 5 is a perspective view after assembling the components of FIG. 4;

6 is a cross-sectional view taken along line BB shown in FIG.

FIG. 7 is a perspective view of a mounting structure of the unit according to the embodiment.

FIG. 8 is a perspective view of a conventional unit mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Screw with cross-hole, 2 ... Base sheet metal part 2a ... Hole for position deviation check, 3 ... Cover part, 4 ... Fixed part sheet metal part 4a ... For position deviation check 5: Guide rail 21: Unit 26: Conventional unit 44: Unit storage box

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuo Miyamoto 1st Horiyamashita, Hadano-shi, Kanagawa Prefecture In-house Enterprise Server Division, Hitachi Ltd. (72) Inventor Toshio Mori 1st Horiyamashita, Hadano-shi, Kanagawa Prefecture Hitachi Manufacturing Enterprise Server Division

Claims (3)

[Claims] 1. A screw holding structure for fixing between parts to be fastened, wherein the opening has a substantially rectangular parallelepiped shape, into which a tool for rotating the screw can be inserted, and a claw for fixing to the part to be fastened. And a cover part having a cover part, wherein the screw is fastened to the part to be fastened while the screw is surrounded by the cover part. 2. A screw holding structure according to claim 1, wherein said cover part has a slit-shaped hole, and said screw has a washer incorporated in a neck portion of said screw. Characteristic screw holding structure. 3. A screw holding structure for fixing a first part to be fastened and a second part to be fastened, a plate having an opening through which a tool for rotating the screw can be inserted, and a plate protruding from the plate. A cover part having a claw portion provided with the claw part, wherein the first part to be fastened includes a groove for fixing the cover part engaged with the claw part, and a second part to be fastened. And a through-hole used for alignment between the second part to be connected, and the mark to be used for alignment with the first part to be connected is related to the through-hole. A screw holding structure characterized by having a screw.