JP2016061419A - Fixing / releasing metal fittings using a vertical object whose cross-sectional shape is similar to a ridge or L-shape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a held item to be fixed*released only through turning of a nut or a bolt, i.e. only through one side operation by applying a fixing*releasing metal fitting for the items to be held by bolt*nut.SOLUTION: A vertical surface item having a slit with larger width than a bolt diameter at a bottom surface part of the vertical surface item having a shape of U10 or L-shape similar sectional shape is applied between a bolt and a nut, and further a bolt piece having a member fixed in a direction opposite to a bolt thread direction is applied to a bolt head. The bolt is set in position to a prescribed position along a slit 19 and at the same time the bolt piece is fitted to a bottom side part 13 of the vertical surface item with an appropriate looseness so as to prevent rotation of the bolt and at the same time, a dropping of the bolt once arranged at a prescribed position. Further, the end part of the member fixed in a direction opposite to the bolt thread direction at the bolt head is abutted against the upper surface of the vertical surface item having either U10 or L-shape similar shape to enable a position of the axial direction of the bolt to be restricted against its retracting motion.SELECTED DRAWING: Figure 1

Description

The present invention relates to a metal fitting that uses bolts and nuts to fix and release an object sandwiched between them.
In the following, “fixing / releasing” may be simply abbreviated as “fixing” as appropriate.

When fixing a clamp using bolts and nuts, usually hold the bolt head or nut with a spanner or the like so that the bolt or nut does not rotate, and rotate the nut or bolt head in the specified direction to clamp the clamp. When the pin is fixed and the clamped object is released, the bolt head or nut is pressed with a spanner or the like, and the nut or bolt head is rotated in the direction opposite to the rotation direction to be released.
Hereinafter, to unify the description, press the bolt head with a spanner, etc., rotate the nut in a specified direction to fix the clamped object, and when releasing the clamped object, press the bolt head with a spanner, etc. The case of releasing by rotating in the reverse direction to the rotation direction will be described.

If the structure can hold the bolt head with a spanner to prevent the bolt from rotating, the above method will suffice. However, if the structure cannot hold the bolt head with a spanner, etc., fixing and releasing with bolts and nuts If the screw has a small diameter, use a tapping screw or the like, or if the screw has a large diameter, weld a bolt or nut, or abandon the fixing and releasing method using the bolt and nut. Therefore, the current situation is that there is no choice but to rely on other methods.
In the case of the method of welding bolts or nuts, not only bolts and nuts but also re-use of products is difficult, so that it is employed only in special cases.
In addition, when the equipment is operated under high temperature conditions, the equipment may be deformed or damaged more than expected due to the effects of heat, and the bolts and nuts may be burned or broken. It was customary to change bolts and nuts in space.

Therefore, there is no need to hold the bolt head with a spanner or the like, that is, a structure that can fix and release the clamped object simply by turning the nut has been desired. However, there are many problems to solve this problem. It was not led to.

I searched the Gazette Text of the Patent Digital Library (public patent gazette) under the following conditions, but there is nothing that can be considered as applicable. "Summary and Claim" "Bolt" AND "Summary and Claim" "Nut" AND "Summary and Claim" "Time" AND "Summary and Claim" "Stop" AND "Summary and Claim" ”“ Fittings ”AND“ Summary and claims ”“ Fixed ”529 cases found

  The present invention relates to a fixing / releasing metal fitting for a clamped object using bolts and nuts, which has been conceived under the circumstances described above. The clamped object can be fixed and released only by turning the nut, that is, only from one side. The challenge is to make it possible.

In order to solve the above problems, it is necessary to solve the following specific problems.
Problem 1 is how to move the bolt close to a predetermined position.
Problem 2 is how to prevent the bolts once placed in place from falling off.
Problem 3 is how to prevent the bolt from retreating in the axial position when the nut is fitted into the screw at the bolt end.
Problem 4 is how to prevent the bolt from rotating as the nut is turned.

For this reason, the following structure was adopted in the present invention.
(1) An elevational body provided with a slit having a width larger than the bolt diameter at the bottom surface of an elevational body having a cross-sectional shape similar to a ridge or an L shape between the bolt and the nut was used.
In addition, as shown in FIG. 1, the “cross-sectional shape similar to the heel” refers to “the heel-like shape” as shown in FIG. ”.
Hereinafter, a part having a shape having “splash” at the end point of the second brush will be appropriately referred to as a “splash part of a heel”, and “a cross-sectional shape is a heel-like shape” or “a cross-section is a heel shape” or simply It shall be abbreviated as “匚” as appropriate.
In addition, “a cross-sectional shape similar to an L shape” refers to a shape obtained by removing a shape corresponding to the first brush from a hook shape (FIG. 1).
(2) A bolt having a member fixed to the bolt head in a direction opposite to the bolt screw direction or a bolt using a polygon washer immediately below the bolt head was used.
The above (1) solves the problems 1 to 4 described above.
The above (2) also solves the problems 1 to 4.

  The bolt can be moved close to a predetermined position, which can be easily done.

  It is possible to prevent the bolts once arranged at a predetermined position from falling off.

  When the nut is fitted into the screw at the bolt end, the backward movement of the bolt in the axial direction can be suppressed within a certain distance.

  When turning the nut, the rotation of the bolt can be prevented.

  As an accumulation effect of the various effects described above, it is not necessary to press the bolt head with a spanner or the like, that is, the clamped object between the bolt and nut can be fixed and released simply by turning the nut. That is, it becomes possible to fix and release the clamped object between the bolt and the nut from one direction or with only one hand.

The effect of the above paragraphs 0010 to 0013 is that it is convenient to replace bolts and nuts that have been burned in under high-temperature conditions, etc. Especially effective for nut replacement.

FIG. 3 is an arrow view of the AA arrow cross section of FIG. 2, and is a cross sectional arrow view showing an elevational object having a cross-sectional shape similar to a heel. It is an arrow line view which shows the whole elevational body object of which cross-sectional shape is the shape similar to a heel among the fixing metal fittings of this invention. It is an arrow line view which shows the volt | bolt which fixed the member to the bolt head in the reverse direction to the volt | bolt screw direction among the fixing metal fittings of this invention. It is an arrow view which put the dimension line in FIG. FIG. 3 is an arrow view with a dimension line in FIG. 2. FIG. 4 is an arrow view with a dimension line in FIG. 3. It is an arrow line view which shows the Example regarding Claim 3 of this invention. It is an arrow line view which shows the Example regarding Claim 4 of this invention. It is an arrow line view which shows the Example regarding Claim 1 and 3 of this invention. It is sectional drawing which shows the Example regarding Claim 1 and 3 of this invention. It is an arrow line view which shows the Example regarding Claim 2 and 4 of this invention. It is sectional drawing which shows the Example regarding Claim 2 and 4 of this invention.

Of the present invention, an elevated body provided with a slit having a width larger than the bolt diameter at the bottom side of an elevated body having a cross-sectional shape similar to that of a heel (hereinafter, appropriately referred to as a “fitting having a ridge-shaped cross section”). (Hereinafter abbreviated as “)” (FIGS. 1 and 2).
In addition, an upright body in which a slit having a width larger than the bolt diameter is provided on a bottom surface portion of an upright body having a cross-sectional shape similar to an L shape (hereinafter, abbreviated as “a metal fitting having an L-shaped cross section” as appropriate) ) Will be described later.

As shown in FIGS. 1 to 2, the metal fitting 10 having a cross-sectional shape has a top surface (hereinafter referred to as “upper surface” as appropriate) 11 corresponding to the upper side of the heel, and a side surface corresponding to the side of the heel (hereinafter referred to as “side surface as appropriate”). ) 12, a bottom surface corresponding to the bottom of the ridge (hereinafter referred to as “bottom surface” as appropriate) 13, a splash surface of the splashed portion of the ridge (hereinafter referred to as “splash surface” as appropriate) 14, and the front of the ridge. It is an upright body composed of a closed front surface (hereinafter referred to as “front surface” as appropriate) 15 and a back surface (hereinafter referred to as “rear surface” as appropriate) 16 that closes the surface facing the bag.
Depending on how it is used, the front face 15 or the back face 16 may be omitted.
Further, it is desirable that each surface is manufactured with as few members as possible so that the cost can be reduced by using bending or the like.

As shown in FIGS. 4 to 5, the depth of the upper surface 11 is D1, the height of the side surface 12 is H1, the width of the bottom surface 13 is B1, and the height of the splashing surface 14 is H3.
In addition, although it is possible to define the dimensions strictly in consideration of the plate thickness of the plate material to be used, here, in order to simplify the explanation, the plate thickness is appropriately adjusted to the illustrated inner rectangular / outer rectangular dimensions, The numerical value shall be read.
On the bottom surface, a slit 19 is cut from the splash surface toward the side surface. The distance between the back side of the slit and the back surface is L1, and the distance between the front side of the slit and the front surface is L3. Then, the opening width of the slit is D1− (L1 + L3).
A circular hole 18 corresponding to the bolt diameter to be used is opened at the end of the slit.
Note that a rectangular opening may be left without providing the circular hole 18.

  Next, a description will be given of a bolt piece 20 (hereinafter, referred to as “bolt piece” as appropriate) in which a member is fixed to the bolt head in a direction opposite to the bolt screw direction (FIG. 3).

The bolt piece 20 includes a bolt 21, a bottom surface 22 of an L-shaped piece to which the bolt is fixed, and a rear surface 23 of an L-shaped piece to which the bolt is not fixed. The bolt is penetrated through an opening opened in the bottom surface 22. It is fixed with a bolt head.
In this example, a bent L-shaped piece is used, but a two-piece object may be integrated by welding or the like (not shown).
Further, as shown in FIG. 7, the member 24 may be fixed to the side surface of the bolt head.

Although there is no restriction | limiting in the diameter of the volt | bolt to be used, below, it demonstrates for M12 grade.
In addition, the materials and dimensions used for the L-shaped pieces 22 and 23, the member 24 (FIG. 7), the polygonal washer 25 (FIG. 8), and the metal fitting 10 (FIG. 1) whose cross section is fixed to the bolt 21 are used. However, as an explanation example of the present application, explanation will be made assuming a stainless steel having a thickness of about 2.0 mm (eg, SUS304).

As shown in FIG. 6, the height of the back surface 23 of the L-shaped piece to which the bolt is not fixed is H2, the shortest distance from the bolt side surface to the back surface 23 of the L-shaped piece to which the bolt is not fixed is L2 and the bolt side surface. Let L4 be the shortest distance to the end of the bottom surface 22 of the L-shaped piece to which the bolt is fixed.
The depth of the bottom surface 22 of the L-shaped piece to which the bolt is fixed is D2 and the width is B2.
These D2 and B2 serve to prevent rotation of the bolt and also serve as a washer.

It is convenient to establish the following relationship between the distance dimension related to the opening width of the slit 19 and the distance dimension related to the bolt 21 and the L-shaped piece.
(A) When the bolt is set while the rear surface 23 of the L-shaped piece to which the bolt is not fixed is applied to the rear surface 16, at least L1 <L2
(B) When the bolt is set while the end of the bottom surface 22 of the L-shaped piece to which the bolt is fixed is applied to the front surface 15, at least L3 <L4

The height (H1-H3) of the opening composed of H1 as the height of the side surface 12 and H3 as the height of the splashing surface 14 is the height of the back surface 23 of the L-shaped piece to which the bolt is not fixed. Therefore, at least the following relational expression must be satisfied.
H1-H3> H2

When the paragraph numbers 0023 to 0024 are established, the bolt piece 20 is smoothly arranged at a predetermined position while the bolt 21 is received in the opening of the slit 19.
As a result, the problem 1 “the position of the bolt can be brought close to the required position” is solved.

  In addition, the diameter of the opening 18 corresponding to the bolt diameter provided at the end of the slit must be larger than the diameter of the normal washer opening, but this disadvantage is that the L-shaped piece to which the bolt 21 is fixed. Since the bottom surface 22 is replenished, the metal fitting has sufficient strength.

A usage example of the metal fitting 10 and the bolt piece 20 having a hook-shaped cross section will be described with reference to FIGS. 9 and 10.
The metal fitting having a hook-shaped cross section is fixed in advance to a predetermined position of the casing 30 by welding or the like. The sound absorbing panel 32 coupled to the casing is set at a predetermined position of the casing by the presser fitting 31 while sandwiching the packing 36.
The bolt 21 of the bolt piece penetrates through the circular hole 18 of the hook-shaped fitting, the packing, and the holding fitting, and is positioned at a predetermined position by the nut 37 through the washer 35.

When the nut 37 is fitted into the bolt, the bolt is usually retracted, but the end of the back surface 23 of the L-shaped piece to which the bolt is not fixed hits the upper surface 11 and no further retracts. “Retraction of the axial position of the bolt can be suppressed when the nut is fitted into the screw” is solved.
When attaching the nut, pressing the end of the back surface 23 of the L-shaped piece to which the bolt of the bolt piece is not fixed to the bolt side with another tool (details omitted) will cause the bolt head to protrude. This is one method for facilitating the attachment of the nut.

When the bolt piece 20 is smoothly disposed at a predetermined position, the bolt piece 20 is bolted to a box comprising five surfaces of the side surface 12, the bottom surface 13, the spring surface 14, the front surface 15 and the back surface 16, that is, five surfaces excluding the upper surface 11. The bottom surface 22 of the L-shaped piece to which is fixed is brought into a state of being fitted, and the problem 2 “the bolt once arranged at a predetermined position can be prevented from being dropped” is solved.
In addition, Problem 4 “A bolt can be prevented from rotating when the nut is rotated” is also solved.
However, the solution to Problem 4 does not require the above five surfaces of the “fitting having a bowl-shaped cross section”, and even if there are two surfaces, Problem 4 may be solved. The larger the number, the stronger the rotation of the bolt can be prevented.

  The bolt 21 may be finally locked by the lock nut 38 to prevent the nut from loosening (FIGS. 9 and 10).

  In addition, although the dimension (especially H1, B1, and D1) of each part is suitably determined by the bolt diameter to be used and the dimension of the structure to be used, it is usually about 2 to 5 times the bolt diameter, and D1> D2 Of course, B1> B2 and H1> H2, and other appropriate tolerances are recognized within a range not losing the significance of the fixing metal fitting of the present invention.

Next, the metal fitting whose section is L-shaped will be described.
The metal fitting having an L-shaped cross section is a member as shown in the embodiment of FIGS. 11 and 12, which replaces the upper surface 11 (FIG. 1) of the metal fitting 10 whose cross section is already in the structure to which the metal fitting is attached. Is used when exists.
Further, in this case, since the dimension H1 (FIG. 4) is small, there is a situation where it is not necessary to use the bolt piece 20 (FIG. 3). In this case, the polygon shown in FIG. The washer 25 can be used (FIGS. 11 and 12), and the effect of preventing the rotation of the bolt and the effect of the washer can be expected.

  Up to now, the bolt piece 20 having the L-shaped piece fixed immediately below the bolt head has been described. However, the present invention can be applied even when the nut is fixed to the L-shaped piece, and in this case, the bolt is turned around. become.

The fixing method consisting of bolts and nuts is widely used in daily life and industry, and is an indispensable fixing method. It is also possible to turn bolts and nuts by turning the nuts without stopping the bolt head rotation. The method of fixing the clamps between the nuts is highly demanded by the industry, and can be done in a short time and safely, especially when repairing and maintaining equipment exposed to high temperatures such as thermal power plants. , Industrial applicability is high.

10 Metal fittings with a cross-section in cross section 11 Upper surface corresponding to the upper side of the ridge (= upper surface)
12 Side surface corresponding to the side of the ridge (= side surface)
13 Bottom surface corresponding to the bottom of the ridge (= bottom surface)
14 Splashing surface 14 (= Springing surface)
15 Front (closed) that closes the front of the fence
16 Back side (= back side) to close the face
18 circular hole 19 slit 20 bolt piece 21 bolt 22 bottom face of L-shaped piece to which bolt is secured 23 back face of L-shaped piece to which bolt is not secured 24 member 25 polygonal washer 30 casing 31 presser fitting 32 sound absorbing panel 35 washer 37 nut 38 Lock nut

Claims (4)

  In a metal fitting consisting of a bolt and a nut for fixing / releasing a clamped object, a slit having a width larger than the bolt diameter is provided between the bolt and the nut at the bottom surface of an upright body having a cross-sectional shape similar to that of the heel. Fixing / release metal fittings characterized by the use of vertical objects   In a metal fitting consisting of a bolt and a nut for fixing / releasing a clamped object, a slit having a width larger than the diameter of the bolt is provided between the bolt and the nut at the bottom surface of an upright body having a cross-sectional shape similar to an L shape. Fixing / releasing metal fittings characterized by the use of a vertical object provided   3. A fixing / release bracket according to claim 1, wherein a bolt having a member fixed to the bolt head in a direction opposite to the bolt screw direction is used for the bolt head.   3. The fixing / releasing bracket according to claim 1, wherein a bolt using a polygon washer is used immediately below the bolt head.

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