JPH0725450Y2 - Fastener - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention has a mounting surface such as a toilet seat or a toilet lid on the front side in a place where work cannot be performed on the back surface of the mounting body such as a toilet bowl. It relates to a fastener that can be attached by work from.

《Prior Art》 Conventionally, for example, when a toilet seat or an attachment body of a toilet lid is to be fixed to an attached body such as a toilet bowl, it is impossible to work from the back side at the fixed portion. , Insert the fixing plug formed by the elastic body into the hole formed in the toilet bowl, etc., screw the bolt through the mounting body from the front side,
By tightening this, the fixing plug is elastically deformed, and thereby the fixed state is to be secured.

However, when such a fixing means is used, elastic deterioration of the fixing plug due to long-term use, loosening of the fixing state due to vibration during transportation or handling, external pressure, etc., and the bolt may come out toward the surface side. is there.

In order to eliminate this, after inserting the nut type fixing plug into the mounting hole in the attached object such as a toilet bowl, insert a bolt into this and rotate the nut part of the fixing plug 90 degrees. A fastener that prevents the nut from coming out of the mounting hole and bolts in this state has already been proposed. (Refer to Japanese Utility Model Publication No. 60-35778 and Japanese Patent Publication No. 40-28963) <Problems to be solved by the invention> With the above fastener, the change over time due to long-term use is resolved, but the nut part After inserting this into the mounting hole,
Since it will rotate, it is necessary to lengthen the length of the plug main body that pivotally supports the nut part as much as the rotation is allowed.As a result, the nut is tightened by the bolt after rotating 90 degrees. When the part is moved, its stroke becomes large, resulting in poor workability.

Therefore, there are restrictions on the place of use such as being unable to use it in places where the back surface of the toilet bowl, etc. is extremely narrow, and it may take time to tighten and remove it with bolts. Since the nut part is rotatable with respect to the main body etc., when the whole is turned sideways,
Since the nut part rotates 90 degrees with respect to the sideways mounting hole and cannot be removed, it cannot be used for the sideways mounting hole, and this also limits the range of use. have.

The present invention has been made in view of the above-mentioned problems of the above-described conventional technology. The present invention provides a back surface of a fastener that can be bolted from the front side in a place where back surface work cannot be performed. Even when the space is extremely narrow, the mounting body can be mounted on the mounted body, and the mounting can be done easily from the vertical and horizontal directions and all other directions in a short time, and the mounting state is also reliable. The purpose is to try to do something.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention has a pair of split nuts that are vertically divided into two, and both split nuts are pivotally mounted near the upper end. Each of the facing surfaces is formed as an inclined surface that inclines and descends from the upper side to the lower end outside so that the lower end can be reduced in diameter by rotating each inwardly around the pivotally attached part. With a split screw hole into which the fastening screw is screwed with the surface center as an axis, and a split mounting nut in which locking projections are respectively provided on the outer sides of the lower ends thereof, and a pin at the pivotal mounting portion of the split mounting nut. Longitudinal holes for guiding are bored in the tubular portion, and a flange for engaging with the upper surface of the attachment hole of the attachment base and an engaging projection of the split nut can be fitted to the upper and lower ends of the tubular portion, respectively. An object of the present invention is to provide a fastener including a mounting bush having a locking groove. To do.

<< Operation >> For example, when fixing a mounting base body that supports a seat, a toilet lid, etc. to be openably and closably open to a mounted body such as a toilet bowl, the lower ends of the pair of split nuts of the split mounting nut are pushed inward. As a result, the pivotal mounting portions are pivoted inwardly, thereby reducing the diameter of the lower portion of the split mounting nut.

Next, in this state, install the split mounting nut on the mounting bush.
After inserting it halfway by inserting it from the lower end side, insert the pin into the pivotal attachment part of the split mounting nut from the vertically elongated hole, and push the split mounting nut downward into the mounting bush within the effective stroke range of the vertically elongated hole. Decorate as much as possible.

In this state, insert the mounting bush into both mounting holes penetrating the mounting base and the body to be mounted, lock the flange on the upper surface of the opening of the mounting base, and then install the split mounting nut inside the mounting bush. By pushing in, the locking projections of both split nuts are fitted into the locking grooves of the mounting bush.

Next, when the fastening screw is screwed into the split screw holes provided opposite to both split nuts of the split mounting nut by a screwing operation, both split nuts are rotated outward with the upper pivoting portion as the center. By being pushed out by the movement and the lower part of which is expanded in diameter, each locking projection is fitted into each locking groove of the mounting bush, whereby the split mounting nut and the mounting bush are integrated. At the same time, the portion of each of the above-mentioned locking portions that protrudes outward from the locking groove is locked to the lower surface of the mounting hole in the mounted body, and the split mounting nut is pulled up by tightening the tightening screw, thereby locking. The protrusion is crimped onto the lower surface of the opening of the mounting hole, and the mounting base is fastened to the mounted body.

In the tightened state, loosen the tightening screw by screwing,
By pulling out the split nuts from the split screw holes, the split mounting nuts can be reduced in diameter by the movement in the opposite direction to the split nuts, and the split projections are locked by the locking projections against the lower surface of the mounted body. Since the state can be released, the attachment base can be removed without any trouble.

<< Embodiment >> The present invention will be described below with reference to an embodiment of the drawings.

As shown in FIGS. 1 to 6, the split mounting nut 1
, The mounting bush 2, and the pair of pins 3, 3 as main members.

The split mounting nut 1 is a pair of split nuts 1a and 1b whose transverse cross section is formed into a substantially semi-cylindrical shape by splitting into two in the vertical direction, and by pivoting the upper end portion side thereof into a substantially cylindrical shape. Is formed in.

The pair of split nuts 1a and 1b are reduced in diameter by rotating their lower portions inward around the pivotally connecting portion 4, and the lower portions are in a reduced diameter state, as shown in FIG. So that both facing surfaces are formed on the inclined surfaces 5 and 5 which are symmetrically inclined downward from the pivotal attachment portion 4 to the outside, and
Vertically long split screw holes 7, 7 into which the fastening screws 6 shown in FIG. Stop groove 2d, 2
Locking projections 8, 8 that can be freely inserted into and removed from d are laterally projected.

Here, as the pivotally connecting portion 4, the one shown in FIG. 1, FIG. 3, FIG. 5, and FIG. 6 is a pair of split nuts 1a, 1b.
In the vicinity of the upper end of one (1a) on both facing surfaces of the (1a), the ridges 4a, 4a are provided laterally on the left and right, and the left and right sides of the opposite surface of the other (1b) face each ridge 4a, 4a The grooved grooves 4b, 4b are provided laterally, and the protrusions 4a, 4a are engaged with the grooved grooves 4b, 4b, or in the case of FIG. The projecting pieces 4c, 4c, 4d, 4d are vertically arranged and meshed with each other, and the projecting pieces 4c, 4d, 4c, 4d are pivotally attached by a pair of pins 3, 3.

In the former pivoting portion 4, the pin insertion holes 4e, 4e are laterally provided at the centers of the both protrusions 4a, 4a, and the pair of pins 3, 3 project outward in the respective holes 4e, 4e. It is fitted to do.

In addition, the inclination angle α (FIG. 6) of the above-mentioned inclined surfaces 5 and 5 on the facing surfaces of the pair of split nuts 1a and 1b is determined by the split mounting nut 1.
Is set at a convenient angle (for example, about 15 degrees) for reducing the diameter of the lower part of the mounting bush 2 so that it can be inserted into the mounting bush 2.

Further, the split screw holes 7, 7 of the pair of split nuts 1a, 1b are recessed in a gutter shape of a substantially truncated conical inverted cone shape by forming the facing surfaces on the inclined surfaces 5, 5. As shown in FIG. 6, as the fastening screw 6 is advanced, the lower portions of the split nuts 1a and 1b are pushed and rotated outward as indicated by arrows a and a '.

The split screw holes 7 and 7 may be formed long from the upper end to the lower end of the split nuts 1a and 1b as shown in the illustrated example, but only the lower portion is split from the upper end portion indicated by the arrow b in FIG. Screw hole 7
It can also be formed.

Therefore, each fastening screw 6 corresponding to each divided screw hole 7 is prepared.

Furthermore, the split nuts 1a and 1b have outer surfaces of the upper end portions of the pair of split nuts 1a and 1b so that the upper end portions are not expanded by reducing the diameter as shown in FIG. The tapered surfaces 1c, 1c are formed so that the diameter gradually decreases from the pivotal portion 4 toward the upper end.

Further, since the pair of split nuts 1a, 1b are integrally formed of metal, synthetic resin or the like, the split screw holes 7, 7 are also
It is preferable that the split nuts 1a and 1b are molded at the same time, not after processing.

As shown in FIG. 2, FIG. 5, and FIG. 6, the mounting bush 2 has a cylindrical portion 2a having an inner diameter into which the split mounting nut 1 can be inserted with its lower portion reduced in diameter. , And is integrally formed with the locking flange 2b at the upper end thereof.

On the front and rear sides of the upper portion of the tubular portion 2a, the vertical guide holes 2c and 2c for the pins 3 and 3 are provided in a pair, and the split nut 1a is provided on the left and right sides of the lower end portion. , 1b locking protrusion
A pair of locking recessed grooves 2d, 2d that can be fitted and removed freely are provided in a rectangular shape at the lower end opening.

Further, the flange 2b has two notch recesses 2 for stopping rotation.
e, 2e are formed, and the cutout recesses 2e, 2e are engaged with a protrusion (not shown) provided on the upper surface of the opening of the mounting hole 10 of the mounting base 9 as shown in FIGS. 5 and 6. Thus, the rotation of the mounting bush 2 is prevented.

The mounting bush 2 is integrally formed of a required metal material or is formed by pressing a required metal plate.

When using the fastener constructed in this way,
As shown in FIGS. 6 and 6, of course, when fixing the mounting base 9 for pivotally attaching the mounting body such as the toilet seat or the toilet lid to the mounted body 11 such as the toilet bowl, the pair of mounting bodies 9 is preliminarily set in advance. Split nut 1
By pushing the lower ends of a and 1b inward, both split nuts
1a and 1b rotate inwardly around the pivotal mounting portion 4, whereby the split mounting nut 1 is reduced in diameter so that its lower portion can be inserted into the mounting bush 2 as shown in FIG. 5 (A). In this state, the split mounting nut 1 is inserted into the mounting bush 2 from the lower end thereof, and after being inserted to a predetermined position,
This product is assembled by holding the split mounting nut 1 in the mounting bush 2 by inserting a pair of pins 3, 3 into the pivotally attached parts 4, 4 from the vertically long holes 2c, 2c of the mounting bush 2. Has been.

In the product of the present invention thus constituted, the mounting bush 2 is fitted and inserted into the mounting hole 10 of the mounting base body 9 and the mounting hole 12 of the mounted body 11 from the lower end thereof as shown in FIG. 2b is attached to the attachment base 9 on the upper surface 10a of the opening of the attachment hole 10.

Next, as shown in FIG. 6, both disassembly screw holes of the split mounting nut 1.
When the fastening screw 6 is screwed to 7,7, the lower part of the split mounting nut 1 is pushed outward by the fastening screw 6 to expand its diameter, and the inner circumference of the mounting bush 2 is expanded. While pressing it against the surface, the pair of left and right locking projections 8,
It is fitted into a pair of locking recessed grooves 2d, 2d of the mounting bush 2, and its tip projects outward from the recessed grooves 2d, 2d, and is locked in the lower surface 12a of the opening of the mounting hole 12 of the mounted body 11. It will be possible.

Further, as the tightening screw 6 is tightened, the split mounting nut 1 is pulled up with respect to the mounting bush 2, and the locking projections 8 and 8 are formed on the lower surface 12a of the opening of the mounting hole 12 of the mounted body 11. It is pressed firmly against, and the mounting base 9 is firmly clamped and fixed to the mounted body 11.

Further, the mounting bush 2 is inserted into both the mounting holes 10 and 12 of the mounting base body 9 and the mounted body 11, while the pins 3 and 3 are attached to the pivotally mounting portions 4 and 4 of the split mounting nut 1 and the outer ends thereof. Insert the part so that the inner end does not project outward from the pivotally attached parts 4, 4 but the inner end projects inward.
In this state, the split mounting nut 1 is inserted into the mounting bush 2 in the same manner as described above, and then the fastening screw 6 is inserted into both split screw holes.
By screwing to 7,7, pin at the tip of the screw 6.
It is also possible to push out 3, 3 to the outside and engage with the vertically long holes 2c, 2c of the mounting bush 2.

<Effect of Device> Since the device of the present invention is configured as described above, the lower part of the split mounting nut is expanded by the screwing of the fastening screw,
The locking projection can be locked to the lower surface of the mounting hole opening of the mounted body, and the split mounting nut is pulled up by tightening the fastening screw, so that the locking projection is attached to the lower surface of the mounting hole opening. Since it is firmly crimped, it is possible to tighten the mounting base on which the toilet seat, toilet lid, etc. are pivotally attached to the mounted body, and the lifting stroke of the tightening screw that is the nut part compared to the conventional example Not only that, but the length as a whole can be made very small. Therefore, not only when the back surface space of the mounting location in the mounted body is wide,
It can be used even in very narrow places, not only can the range of use of this type of fastener be expanded, but the screwing operation of the fastening screw can be performed easily and quickly, and the fastening state is also secure. Becomes

In addition, since the conventional nut rotation method is not used, there is no directional property, and it can be used for mounting at all angles such as downward, upward or sideways, and diagonal.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an exploded state of a split mounting nut which is one component of the fastening device according to the present invention, and FIG. 2 is a perspective view showing a mounting bush which is another component of the same. Fig. 3 is a transverse sectional view showing a pivotal mounting portion of the same split mounting nut, and Fig. 4 is a transverse sectional view showing a pivoting portion according to another embodiment of the same split mounting nut.
FIG. 5 (A) is a vertical cross-sectional view showing the process of assembling the product of the present invention, and FIG. 5 (B) is a vertical cross-sectional view showing a state in which the attachment base is attached to the attachment body according to the embodiment, and FIG. It is a longitudinal cross-sectional view which shows the attachment completion state of the Example. 1 …… Split mounting nut 1a, 1b …… Split nut 2 …… Mounting bush 2a …… Cylindrical part 2b …… Flange 2c, 2c …… Vertical elongated hole 2d, 2d …… Locking groove 3,3 …… Pin 4 ... Pivoting part 5,5 ... Sloping surface 6 ... Tightening screw 7,7 ... Splitting hole 8,8 ... Locking protrusion

Claims (1)

[Scope of utility model registration request] 1. A pair of split nuts which are vertically split into two, wherein both split nuts rotate inwardly about the pivotally mounted portion pivotally mounted near the upper end. In addition, each opposing surface is formed as an inclined surface that inclines and descends from the upper side to the outside of the lower end so that the lower end portion can be reduced in diameter, and a split screw with which the fastening screw is screwed with the center of each opposing surface as an axis. A hole is provided in the tubular portion, and a split mounting nut having locking projections provided on the outer sides of the lower ends thereof and a vertically elongated hole for guiding the pin in the pivotal attachment portion of the split mounting nut are provided in the tubular portion. The upper and lower ends of the portion are respectively provided with flanges that engage with the upper surface of the attachment hole of the attachment base and an attachment bush having an engagement groove into which the engagement protrusion of the split nut can be fitted. Kimono.