JPS6035779Y2 - Blind nut mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blind nut attachment structure for attaching a blind nut to a plate-like member.

A blind nut is used to connect two members together and consists of a hollow shank threaded on the inside and a flange at one end thereof.

This blind nut is attached to one plate-shaped member by penetrating the shank and then expanding and expanding a part of the shank using a tool. The two parts are connected using an externally threaded element.

In this mounting structure using a blind nut, if the male thread element is fixed to one member by welding or the like, since the blind nut is fixed to the other member by the flange and the expanding shank, both members In order to connect them, one of the members must be rotated.

However, if the member to be rotated is large or the space is narrow, or if both members cannot rotate, there is a drawback that the connection cannot be achieved.

In addition, as a solution to the above-mentioned drawbacks, as shown in FIG. However, a device is known in which the other channeled member 5 to be joined is snap-engaged with the small plate 4, thereby joining the two members.

In this structure, when the predetermined gap S between the member 5 and the wall 3 needs to be readjusted, it is inconvenient that the member 5 must be removed first.

Furthermore, when the members 5 are connected at multiple locations, adjusting the intervals is troublesome and requires skill and time.

Therefore, an object of the present invention is to provide a mounting structure for a blind nut that can easily connect two members even if the two members are difficult to rotate, and that allows the distance between the two members to be adjusted while they are still connected. It is about providing.

To distantly related to this object, the present invention provides a blind nut having a flange at one end and a hollow shank extending from the flange and having a thread formed on the inner circumferential surface, and a plate having a hole through which the shank passes. In the mounting structure of a blind nut attached to a plate-shaped member by expanding a part of the shank, a spacer having a height greater than the thickness of the plate-shaped member is provided between the flange and the expanded part of the shank. An auxiliary member extending from one end of the spacer and having a size necessary for rotating the blind nut is fixed to the spacer, and a hole having a diameter larger than the outer diameter of the spacer is formed in the plate member. A blind nut mounting structure is provided in which the plate member is mounted so as to be rotatable around the outer periphery of the spacer.

Therefore, even if the plate member is fixed or large and difficult to rotate, the blind nut can be rotated using the auxiliary member, making it easy to screw into the bolt. Furthermore, even after the two members are connected, the blind nut can be rotated by operating the auxiliary member, so the interval can be easily adjusted while the two members are still connected.

According to an embodiment of the present invention, the spacer height is made slightly larger than the thickness of the plate-like member, and the hole diameter of the plate-like member is made slightly larger than the outer diameter of the spacer, so that the plate-like member is attached to a blind nut. It is preferable to support it without loosening.

The shape of the spacer may be cylindrical or may be a cylinder having a flange at the opposite end of the auxiliary member, or the auxiliary member may be a disc and stand upright at a predetermined height from the outer periphery of the disc. It is also possible to have an extension part.

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

The blind nut used in the present invention is a known one, and as shown in FIG. A portion of the shank 7 is expanded and fixed to, for example, the plate 2 by the expanded portion 8 and the flange 6.

2a to 2d show a blind nut mounting structure according to the present invention.

In FIG. 2a, a flanged spacer 9 is provided between the flange 6 of the blind nut 1 and the expanded portion of the shank 7.
and an auxiliary member 10 of a predetermined size are interposed, and the blind nut 1 is fixed to the spacer 9 and the auxiliary member 10.

The auxiliary member 10 has a size that is easy for a person to operate, and may be a simple disk, but preferably has an extension 11 extending upright from the outer periphery of the disk as shown in the figure, thereby improving operability. do.

The plate member 12 to be attached to the nut is supported by the flange 13 of the flanged spacer 9 and the flat part of the auxiliary member 10.

In the present invention, the outer diameter of the spacer 9 is slightly smaller than the hole diameter of the plate member 12, and the height of the shank portion of the spacer 9 is slightly larger than the thickness of the plate member 12. By operating the member 10, the blind nut 1 together with the spacer 9 can be rotated relative to the plate member 12.

As long as the blind nut 1 can rotate with respect to the plate member 12, it is preferable to reduce the gap between the plate member and the spacer to eliminate backlash.

The mounting structure shown in FIG. 2 is the same as the structure shown in FIG. 2A, except that the positions of the spacer 9 and the auxiliary member 10 are different.

In the mounting structure shown in FIG. 2C, the spacer 9' has a cylindrical shape and does not have a flange.

Therefore, the plate member 12 is supported by the flange 6 of the blind nut 1 and the flat part of the auxiliary member 10.

In the mounting structure shown in FIG. 2d, the positions of the spacer 9' and the auxiliary member 10 are opposite to the arrangement shown in FIG. It is supported by the auxiliary member 10.

Figures 3a and 3b show a further embodiment.

In FIG. 3a, the structure is substantially the same as that shown in FIG. 2a, except that the attached plate-like member 15 is hollowed out by a channel member, and the auxiliary member 10' is made of a disk-like member.

The bolt 4 is threaded into the shank 7 from the opposite side to that shown in FIG.

The bolt 4 is fixed to a plate 16 fixed to a wall or the like, and cannot rotate.

The example shown in FIG. 3 is the same as the blind nut mounting structure shown in FIG. 2, except that the plate-like member 17 is an elongated plate.

As is clear from the above description, the plate-shaped members 12, 15.17 to be attached are rotatably attached to the blind nut 1, so the plate-shaped members can be rotated by operating the auxiliary member 10.10'. The nut 1 can be rotated and screwed onto the bolt 4 without having to do so.

Therefore, even if the member to be attached is difficult to rotate or cannot be rotated, the blind nut can be easily screwed onto the bolt.

Also, when attaching the plate member at a certain distance from the fixing plate 16 of the bolt 4, for example, as shown in FIG.
The spacing can be adjusted by operating 10'.

4a and 4b show an example in which the blind nut mounting structure of the present invention is applied to the structure shown in FIG. 1.

The small plate 2 having retaining portions 19 at both ends is rotatably supported by the flange 13 of the spacer 9 and a disc-shaped auxiliary member 10'.

In order to screw the blind nut 1 into the bolt 4 extending from the plate 16 fixed to the wall 3, the auxiliary member 10' may be rotated.

After the blind nut 1 is screwed onto the bolt 4, the plate-like member 5 with a channel is attached by snap-fitting to the engaging portion 19 of the small plate 2.

After this installation, the distance S between the wall and the plate member 5 can be readjusted.

That is, since the position of the nut can be changed by rotating the auxiliary member 10', the position of the nut can be changed by rotating the auxiliary member 10'.
The spacing S can be adjusted while the is attached.

In this way, the blind nut mounting structure of the present invention allows readjustment of the spacing while the plate member is attached, so the plate member 5 with channels can be attached at multiple locations, as shown in FIGS. 5a and 5b. However, the level adjustment is easy.

In the known mounting structure as shown in FIG. 1, strict level adjustment is required to keep the mounting height of the plate member 5 constant, which requires a lot of time.

Furthermore, if for some reason the height of the member 5 remains incorrect even after it has been installed, it is necessary to remove it and readjust it.

Such labor and time are completely unnecessary with the blind nut mounting structure of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing one example of a known blind nut mounting structure, FIGS. 2a to 2d are side sectional views showing various embodiments of the blind nut mounting structure of the present invention,
Figures a and b are partially broken perspective views showing a blind nut mounting structure according to another embodiment of the present invention, and Figures 4 a and b are side cross-sectional and perspective views showing a blind nut mounting structure according to yet another embodiment. , FIGS. 5a and 5b are explanatory diagrams in the case where the plate member with channels is attached at a plurality of locations. 1...Blind nut, 2...Small plate, 3...Wall, 4...Bolt, 5...
... Plate member with channel, 6 ... Nut flange, 7 ... Shank, 8 ... Expanded portion of shank, 9.9' ...・Spacer, 10.
10'... Auxiliary member, 11... Extension part, 12, 15. 17... Plate member, 13.
... Spacer flange, 16 ... Fixing plate, 19 ... Engagement part, S ... Spacing.

Claims (1)

[Claims for Utility Model Registration] 1. A blind nut having a flange at one end and a hollow shank extending from the flange and having a thread formed on the inner circumferential surface is attached to a plate member having a hole through which the shank passes. In the mounting structure of a blind nut mounted by expanding a part of the shank, a spacer having a height greater than the thickness of the plate member and one end of the spacer is provided between the flange and the expanding part of the shank. An auxiliary member having a size necessary for rotating a blind nut extending from the spacer is fixed to the plate-like member, and a hole having a diameter larger than the outer diameter of the spacer is formed in the plate-like member. A blind nut mounting structure characterized in that the spacer is mounted so as to be rotatable around the outer periphery of the spacer. 2. The structure according to item 1, wherein the spacer height is slightly larger than the thickness of the plate member, and the hole diameter of the plate member is slightly larger than the outer diameter of the spacer. 3. The structure according to item 2, wherein the spacer is made of a cylindrical member, and the plate-like member is held between the auxiliary member and the flange or expansion shaft. 4. The spacer according to item 2 above, wherein the spacer is a flanged cylindrical member having a flange at an end opposite to the end in contact with the auxiliary member, and a plate-like member is held between the spacer flange and the auxiliary member. structure. 5. The structure according to item 2 above, wherein the auxiliary member is a disk. 6. The structure according to item 5, wherein the auxiliary member has an extension extending upright from the outer periphery of the disk by a predetermined height.