JP2000002222A - Fastening device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify and facilitate attachment/detachment, addition, change, etc., of various members to an element at a required position of a T-shaped groove. SOLUTION: A female screw member 3 is inserted into a T-shaped groove 2, while a male screw member 8 is screwed up into the female screw member 3 at a required position in a long direction of the groove 2 with front side walls 2b of the groove 2 sandwiched between them, so that a groove opening 2a is sectionalized. The female screw member 3 to be inserted into the groove 2 is formed with an engaging flange 5, whose width is shorter than an opening width (w) of the groove 2, and whose length is longer than the opening width (w) but not longer than a bottom width W of the groove 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an element,
It is suitable for tightening and fixing various mechanism members, structural members, and the like through a groove having a groove bottom width wider than a groove opening width, such as a T-slot or a dovetail groove provided therein. The present invention relates to a locking device, and particularly to a method for easily and easily fitting a male screw member or a female screw member into a groove.

[0002]

2. Description of the Related Art For example, when installing slides, pan heads, juggle gyms, swings, horizontal bars, and other playground equipment in a park or the like, a plurality of columns are erected, and the functional members and structures required for each column are required. Connecting and fixing members and the like is widely and generally performed.

In such a case, in recent years, a column as an element has been formed of an extruded member such as aluminum or an aluminum alloy, and the column has
When a plurality of T-grooves are provided at predetermined intervals in the circumferential direction and extend in the length direction of the T-grooves, attachment of a required functional member or the like to the column is performed by using a T end from the end of the column. The male screw or female screw member fitted into the groove is slid to a predetermined position in the longitudinal direction of the T-groove, where the female screw or male screw member screwed into the screw member is provided.
It has been proposed that the functional member or the like be tightened and fixed to the front side wall of the T groove.

[0004]

However, in such a proposed technique, the screw member fitted into the T-groove from one end of the column is slid to a predetermined position in the longitudinal direction of the T-groove. For example, when a plurality of types of members are tightened and fixed to a plurality of places on one support column, it is inevitable to proceed with the work in an assembling order determined by a predetermined fixing position of each member. Therefore, if an assembling error or the like is found during or after assembling, in many cases, it is necessary to remove a member already fastened and fixed, and in some cases, it is necessary to restart the assembling work from the beginning. There was a problem.

[0005] This also applies to the case where replacement due to wear of a specific member or the like, addition of a new member, and the like are performed. Therefore, many man-hours are indispensable. When it is necessary to move the member along with the screw member in the groove along the surface of the column, there is also a problem that the surface of the column is likely to be scratched.

[0006] The present invention is to solve such a problem in the prior art, and it is an object of the present invention to form an element including a mechanical element in addition to the above-described column, leg, and the like. Like a T-shaped groove, a dovetail groove, etc., a groove whose bottom width is wider than its opening width is used, and at a predetermined position in the longitudinal direction, a required mechanism member, a structural member and the like are fastened and fixed to the element. In this case, the screw member arranged in the groove can be directly fitted into the groove at the predetermined position, so that, for example, there is an error in assembling the predetermined member or forgetting to assemble. In the case where replacement or addition of a predetermined member becomes necessary, immediately attach / detach, replace, or assemble only the target member without performing any attachment / detachment of other assembling members. And therefore multiple types of components The assembly of a given member to a given position can be easily performed at any time with a small number of man-hours without any restrictions on the order of assembly, etc. An object of the present invention is to provide a fastening device that is not likely to be caused.

[0007]

According to the present invention, a male screw member or a female screw member is fitted into a groove having a groove bottom width wider than a groove opening width, and a required position in the length direction of the groove. A female screw member or a male screw member is screwed into the screw member and tightened, and a front wall of the groove that defines a groove opening is sandwiched therebetween. An engaging flange having a width smaller than the opening width and a length exceeding the opening width and not more than the groove bottom width is provided.

In this device, when a required functional member or the like is assembled to an element at a predetermined position in a longitudinal direction of a groove such as a T-groove, a screw provided with an engaging flange at the predetermined position or in the vicinity thereof. The member is inserted into the T-groove in a state where the flange width smaller than the groove opening width and the opening width of the T-groove correspond to each other, and the screw member is rotated by about 90 degrees around the central axis. By displacing the engaging flange so that its longitudinal direction is oriented in a direction substantially perpendicular to the opening center line of the groove, the engaging flange is prevented from engaging with the front wall of the T-groove by T. The sliding operation of the screw member in the groove can be easily realized without any necessity.

Thereafter, a female screw or a male screw member is screwed into the screw member via a required functional member or the like, and tightened, so that the functional member or the like is mounted at the expected position. It is possible to assemble easily, quickly and reliably without being affected by any member.

Thus, here, even when a plurality of types of members are assembled to the element along the length direction of the T-groove,
The order of assembling them can be arbitrarily selected.
The attachment and detachment of the member, new attachment, etc. can be easily performed without detachment of other attachment members, so that the number of work steps can be greatly reduced, and the generation of flaws on the element surface is advantageous. Can be prevented. The same applies to the replacement work and the addition work of a specific member.

Here, when the female screw member is fitted into the groove, it usually circumscribes at least one side of a nut portion having an outer contour of a hexagon, a square, or the like. It is preferable that the rotation preventing member restrained by the contact with the opening wall is fitted to the female screw member, whereby unexpected rotation displacement of the female screw member in the groove can be surely prevented.

On the other hand, when the male screw member is fitted into the groove, the male screw member is circumscribed on at least one side of a rectangular contour projection provided on the male screw member, for example, at least one side of a hexagonal or square bolt head. It is preferable to fit a stop member around which rotation in the groove opening is restricted to the male screw member,
With this, the same operation and effect as described above can be obtained.

By the way, the member to be fastened to the element, in other words, the assembling member therewith is externally attached to one or more sides of the female screw member fitted in the groove, or fitted into the groove. If the external thread member is fitted to one or more sides of the square profile projection provided on the external thread member, it is not necessary to provide a special detent member as described above, Can be sufficiently prevented.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the present invention. In the drawing, reference numeral 1 denotes a support as an example of an element. This pillar 1 made of an extruded aluminum material and having a substantially rectangular outer contour has a T-groove 2 extending at the center of each side and extending continuously in the longitudinal direction thereof. Here, each of these T grooves 2 has a groove bottom width W that is wider than the groove opening width w.

As shown in FIG. 2, the screw member to be fitted into the T-groove, the female screw member 3 is, as is apparent from FIG. 2, a nut portion 4 having a quadrangular outer contour. And a hook flange 5 integrally provided on the back side. The hook flange 5 has a width w ₀ smaller than the opening width w of the T groove 2, a width w ₀ longer than the opening width w, and a groove bottom width W. And a length L that is equal to or less than the length L. Here, when the edges in the length direction of the engaging flange 5 are formed in an arc shape as shown in the figure, the diameters of both edges are determined by the groove bottom width W.
Can also be substantially equal.

The female screw portion of the female screw member 3 can be formed only on the nut portion 4 in addition to being formed on both the nut portion 4 and the engaging flange 5 as shown in the figure. The engaging flange 5 is formed with a through hole having a diameter larger than that of the female screw portion.

Further, as shown in the figure, the nut portion 4 and the engaging flange 5 are in a relative posture such that two sides of the nut portion 4 are substantially parallel to the widthwise edge of the engaging flange 5. , One of the diagonal lines of the nut portion 4 may be in a relative posture that is substantially orthogonal to the widthwise edge of the engaging flange 5.
The nut portion 4 has an outer contour dimension that can freely rotate around its axis within the opening width w of the T-groove 2.

As shown in the uppermost row of FIG. 1, the female screw member 3 has the width direction of the engaging flange 5 corresponding to the width direction of the T-groove opening 2a, and this is indicated by an imaginary line in the figure. , It can be fitted into it at a required position in the longitudinal direction of the T-groove 2, and the female screw member 3 in the T-groove can be turned approximately 90 degrees around its axis. As shown in the middle section of FIG. 1 and FIG. 2C, both ends of the engaging flange 5 in the longitudinal direction are engaged with the back surface of the T-groove front side wall 2b that defines the opening 2a. Can be. The nut portion 4 is provided with a flange 5
Under such a hooked state, the opening 2a does not protrude forward.

Here, in order to maintain such a retaining posture of the engaging flange 5, the nut portion 4 of the female screw member 3 is required.
A non-rotating member 6 circumscribing at least one side, preferably four sides, of which rotation in the groove opening 2a is restrained by abutment against the opening wall, for example, a rectangular frame, having a thickness equal to or less than the nut portion 4 It is preferable to fit the nut portion 4 in the opening 2a. Female screw member 3 shown at the bottom of FIG.
FIG. 4 shows a state in which such a detent member 6 is fitted. Since the detent member 6 in this case also contacts both opening walls on its outer surface, the engaging flange 5 is shown.
Can be almost certainly prevented from rotating.

When the detent member 6 is engaged with both opening walls with a frictional force sufficient to support the weight of the female screw member 3, the female screw member 3 is held therewith.
Can be positioned and held at a required position in the length direction of the T groove 2. In this case, the nut portion 4 is pulled out from the detent member 6 to the rear side by the engaging flange 5.
Of the T-groove 2 and the bottom of the T-groove 2.

The bolt 8 is screwed into the female screw member 3 arranged in the T-groove as described above via a required functional member, for example, a handrail 7, and then tightened. Thus, the handrail 7 can be assembled to the column 1 at the expected position.

FIG. 3 shows an outer contour of the nut portion 4 of the female screw member 3 having a substantially hexagonal shape, a planar shape of the engaging flange 5 thereof being rectangular, and a rectangular frame-shaped detent. The member 6 has dimensions that circumscribe two opposite sides of the nut portion 4. Also in this manner, similarly to the above-described case, the handrail 7 can be easily and quickly assembled to the support column 1 at a required position of the T groove 2 without being affected by other assembling members. .

FIG. 4 is a diagram showing another embodiment.
This is to fit the male screw member 9 into the T groove 2. The male screw member 9 includes a bolt portion 10 and a hook flange 11 integrally provided on the back side of the bolt portion 10. The bolt portion 10 is provided with a rectangular projection protruding forward from the hook flange 11. Head 10a forming part
And a male screw portion 10b protruding further forward therefrom.
And Here, the thickness of the head 10a is a thickness that does not protrude forward of the opening 2a, similarly to the nut portion 4 described above. The engaging flange 11 also has the same width w ₀ and length L as the engaging flange 5 described above.

Such a male screw member 9 can also be inserted at a required position in the longitudinal direction of the T-groove 2 based on the action of the engaging flange 5 whose dimensions have been selected, and then it is turned approximately 90 degrees. By displacing, the engaging flange 5
Can be engaged with the back surface of the front side wall 2b of the T-shaped groove 2. Also here, preferably, a rectangular frame-shaped detent member 12 circumscribing the head 10a of the bolt portion 10 and restrained from rotating by the wall surface of the groove opening 2a is attached to the head 10a in the opening 2a. Fit. The detent member 12 also has a thickness that does not protrude forward of the opening 2a.

Therefore, for example, the handrail 7 is attached to the column 1 while the male screw portion 10b of the male screw member 9 arranged as described above is passed through the mounting bracket 7a of the handrail 7 there. By tightening the nut 14 screwed into the nut, the operation can be performed simply and easily, and always reliably.

FIG. 5 is an exploded perspective view showing still another embodiment. In the female screw member 15 having substantially the same configuration as that described with reference to FIGS. 1 and 2, in particular, the thickness of the nut portion 16 is adjusted so that the engaging flange 17 is in a predetermined retaining state and the front side of the T-groove opening 2 a. To a required mounting member, for example, the mounting bracket 7 a of the handrail 7, at least one side of the nut portion 16.
In the figure, through holes 18 circumscribing all sides are provided.
According to this, the mounting bracket 7a is connected to the nut portion 16
By holding the handrail 7 in a predetermined assembling posture, the female screw member 15 can be prevented from rotating without using the frame-shaped detent member as described above.

Under such a configuration, the bolt 1
In order to assemble the handrail 7 sufficiently firmly based on the tightening of 9, the thickness of the mounting bracket 7a needs to be greater than the length of the nut portion 16 protruding from the opening 2a. The same applies to the case where the member to be fitted into the T-groove 2 is a male screw member, and the mounting bracket of the required mounting member is fitted to the head of the bolt portion so as to be fitted to the head.

As described above, the T-groove 2 has been described as an example of a groove whose groove bottom width is wider than the groove opening width, but the T-groove 2 is gradually widened from the groove opening to the groove bottom. In this case, by providing the engaging flange with a tapered shape capable of engaging with the side wall of the dovetail groove, the same operation and effect as described above can be obtained.

[0029]

FIG. 6 shows a case in which the above-described fastening device is applied to a post 21 of a shelter, and a bench 22 and a handrail 2
FIG. 7 shows an example in which a fastening device is applied to each support when various playground equipments are combined to form a composite playground equipment.

In FIG. 7, reference numeral 24 denotes a slider, 25 denotes a bridge, 26 denotes a ladder, and 27 denotes a climber. According to these, it is possible to easily and easily add or change a predetermined functional member, a mechanism member, and the like to each column in a very short time only by the above-described operation at a predetermined position of the column. Can be.

[0031]

As described above, according to the present invention, the screw member can be directly fitted into the groove at a required assembly position of the predetermined member, and the screw member is connected to the extension of the groove. Since it is not necessary to slide in the direction, it is possible to easily and quickly attach / detach / replace the predetermined member to / from the element, and to cause a flaw or the like on the surface of the element by the assembling member. Nor.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a view showing a female screw member and a state in which the female screw member is fitted into a T groove.

FIG. 3 is a view showing another embodiment of the female screw member.

FIG. 4 is a diagram showing another embodiment of the present invention.

FIG. 5 is a diagram showing still another embodiment of the present invention.

FIG. 6 is a perspective view showing an embodiment of the present invention.

FIG. 7 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Prop 2 T groove 2a Opening 2b Front side wall 3,15 Female screw member 4,16 Nut part 5,11,17 Hook flange 6,12 Detent member 7 Handrail 7a Mounting bracket 8,19 Bolt 9 Male screw member 10 Bolt part 10a Head 10b Male thread 14 Nut 18 Through hole w Opening width w ₀ width W Groove bottom width L Length

Claims (5)

[Claims] A male screw member or a female female member is fitted into a groove having a groove bottom width wider than a groove opening width, and a female screw member or a male screw member is screwed into the screw member at a required position in the length direction of the groove. And tighten them together,
A fastening device that defines a groove opening and sandwiches a front side wall of the groove, wherein a screw member fitted into the groove has a width smaller than the opening width of the groove and a length exceeding the opening width and equal to or less than the groove bottom width. A fastening device provided with an engaging flange having: 2. The tightening device according to claim 1, wherein a detent member circumscribing at least one side of the female screw member fitted into the groove and restrained from rotating in the groove opening is fitted to the female screw member. apparatus. 3. A detent member which circumscribes at least one side of a rectangular contour projection provided on a male screw member fitted in a groove and is restricted from rotating in the groove opening, is fitted to the male screw member. Item 2. The fastening device according to Item 1. 4. The fastening device according to claim 1, wherein the to-be-fastened member is fitted to the female screw member fitted in the groove by circumscribing at least one side thereof. 5. The fastening device according to claim 1, wherein the member to be fastened is externally fitted to at least one side of the rectangular contour projection provided on the male screw member fitted in the groove.