JP6925994B2 - Threaded body and female thread member - Google Patents

Description

The present invention relates to a screwed body that can be locked to a plurality of bolts having different outer diameters or pitches of screw grooves, and a female screw member.
Incidentally, the specification and drawings of the "bolt" with respect to "sign displayed", when regardless of specific pitch of outer diameter and screw grooves are commonly used, with the sign of "B", the outer diameter and to indicate specific bolt pitch screw groove defined, as in _{"B 1 ~B 6, B 11 ~B} 14 " are denoted by the subscript numerals "B".

For example, a cubicle is a high-voltage power receiving facility in which a factory-made metal box with a door is installed on the ground surface, basement, etc., and power receiving equipment is housed inside, and in a factory that consumes a large amount of power. used. In order to install the cubicle 94 on the ground surface, the basement, etc., a metal box 95 is installed on the concrete foundation 93. That is, as shown in FIG. 13, a large number of anchor bolts (hereinafter, simply referred to as “bolts”) B are embedded in the concrete foundation 93 corresponding to the shape of the outer peripheral edge of the box, and each of the large number of bolts is used. The box 95 is fixed and installed on the concrete foundation 93 by inserting the protruding end portion Ba into the substrate 91 of the box 95 and screwing the nut N into the protruding end portion Ba of each bolt B.

In the structure in which the box 95 constituting the cubicle 94 is installed on the ground surface or the like as described above, in order to prevent a large number of bolts B from being arranged outside the outer peripheral edge of the box 95, the box 95 An undercut-shaped space 96 is formed on the outer peripheral portion of the substrate 91, which is the lower end portion, so that the protruding end portion Ba of each bolt B is not exposed in the space 96.

On the other hand, the protruding end portion Ba of each bolt B to which the nut N is screwed is entirely covered with a cover body in order to prevent corrosion. As one of the cover bodies, a bolt cap disclosed in Patent Document 1 is known. However, in this bolt cap, the claw forming member 30 is arranged in a locked state inside the integrally cylindrical cap body 21 whose upper end is closed so as not to rotate in the circumferential direction, and the protruding end of the bolt. When the portion is covered with the cap body 21, a plurality of elastically deformable locking pieces 32 provided on the claw forming member 30 enter into the screw groove of the bolt and are locked. Therefore, the locking piece 32 elastically deforms in the direction in which the locking is released to allow the cap body 21 to idle, so that the cap body 21 with respect to the protruding end portion Ba of the bolt B. Could not be fixed firmly. Since the cap body 21 has an integral structure, the cover body is moved in the axial direction of the bolt B from directly above the protruding end portion Ba of the bolt B, and the protruding end portion Ba and the nut N of the bolt B are moved. Therefore, it was not possible to cover the protruding end portion Ba of the bolt B arranged in the undercut-shaped space 96 described above from directly above.

Further, as shown in Patent Document 2, a pair of split nut bodies divided along the axial direction of the bolt are arranged so as to surround the bolt, and the pair of split nut bodies are brought close to each other. A nut body having a configuration in which the nut body is screwed to the bolt and released from the screw by separating the nuts from each other is known, but can be screwed only to a bolt having a specific outer diameter and a thread groove pitch. However, a nut body (screwed body) that can be screwed to a plurality of bolts having different outer diameters or screwing pitches in a locked state has not been developed.

Japanese Unexamined Patent Publication No. 2014-206200 JP-A-2017-129238

An object of the present invention is to provide a plurality of bolts having different outer diameters, or a screwed body that can be locked to a plurality of bolts having the same or similar outer diameters but different pitches of screw grooves, and a female screw member. ..

The invention of claim 1 for solving the above problems is a screwed body that can be locked to the screw grooves of a plurality of bolts having different outer diameters.
A piece body having a first facing portion facing the outer surface of the bolt, and
A piece body holding portion that has a second facing portion facing the outer surface of the bolt and holds the piece body so that the first and second facing portions are arranged so as to surround the bolt from the surroundings. With the main body of the screwed body,
Consists of
A locking projection that is locked to a screw groove on the outer surface of the bolt is formed on at least one of the first and second facing portions.
The piece body holding portion is
The first position where the locking projection can be locked in the screw groove of the bolt arranged in the bolt arrangement space formed by the first and second facing portions, and
By changing the arrangement position of the first facing portion with respect to the second facing portion and expanding the bolt arrangement space, the locking projection can be locked in the screw groove of another bolt having a diameter larger than that of the bolt. Second position and
It is characterized in that the piece body can be held by changing to at least two positions.

According to the invention of claim 1, the piece body is arranged and held at at least two positions of the first and second positions with respect to the piece body holding portion of the screwed body main body, so that the piece body has a specific outer diameter. The same threaded body can be locked to a bolt and at least two bolts having different outer diameters, including a bolt having a diameter larger than that of the bolt.

The invention of claim 2 is characterized in that, in the invention of claim 1, the second facing portion is provided on a separate piece body separate from the screwed body main body.

According to the invention of claim 2, since each of the first and second facing portions is formed into two different piece bodies held by different piece body holding portions of the screwed body main body, each piece body. On each of the back-to-back surfaces of the above, the first and second facing portions that surround the circumference of the bolt and face each other can be formed. As a result, each piece is turned upside down or turned upside down and held by the screwed body body to increase the total number of combinations of the first and second facing parts that surround the bolts of each piece and face each other. Therefore, the number of bolts having different outer diameters that can be locked in the screw groove can be set to "2" or more.

The invention of claim 3 is a screwed body that can be locked to the screw grooves of a plurality of bolts having different outer diameters.
A plurality of pieces are arranged so as to surround the circumference of the bolt, and a plurality of pieces having a locking projection to be locked in a screw groove of the bolt formed on at least one facing portion of the inner surface, and the plurality of pieces. A screwed body body having the same number of piece body holding portions to be attached, and a maintenance means for maintaining a constant arrangement position of a plurality of piece bodies held by the screwed body body.
With
Each piece body holding portion can be held by changing the holding posture of at least one piece body among the plurality of piece bodies, and by changing the holding position, the screw grooves of a plurality of bolts having different outer diameters can be formed. On the other hand, the locking projection can be locked.

According to the third aspect of the present invention, the plurality of piece body holding portions of the screwed body main body have the same number of locking projections formed in at least one facing portion of the inner surface so as to be locked in the screw groove of the bolt. The pieces are held in a state where the arrangement position is maintained by the maintenance means, and at least one of the plurality of pieces is held by changing the holding posture, so that the screws of a plurality of bolts having different outer diameters are screwed. The locking projection can be locked to the groove. Therefore, by changing the holding posture of a specific piece body with respect to the screwed body main body among the plurality of pieces, the same screwed body can be screwed to a plurality of bolts having different outer diameters in a locked state.

The invention of claim 4 is the invention of claim 3, in which at least one of the plurality of pieces is turned upside down and held by the piece holding portion of the screwed body body to bolt the piece. It is characterized in that the holding posture of the piece body is changed so that the arrangement position of the bolt in the radial direction of the facing portion is changed.

According to the invention of claim 4, at least one of the plurality of pieces is turned upside down and held by the piece holding portion of the screwed body main body, so that the bolt of the facing portion facing the bolt of the piece is held. Since the holding posture of the piece body is changed so that the radial arrangement position of the piece is changed, the radial dimension of the columnar bolt arrangement space formed by the facing portions of the plurality of pieces surrounding the bolt. Is changed. As a result, the same screwed body can be screwed to a plurality of bolts having different outer diameters.

The invention of claim 5 is the invention of claim 3 or 4, wherein at least one of the plurality of pieces is turned upside down and the facing portion facing the bolt is changed to hold the piece. It is characterized by changing.

According to the invention of claim 5, in the invention of claim 3 or 4, at least one of the plurality of pieces is turned upside down to change the facing portion facing the bolt, so that the holding posture of the pieces can be changed. It is changed so that the radial dimension of the columnar bolt arrangement space formed by the facing portions of the plurality of pieces surrounding the bolt is changed, and the same screwed body is used for the plurality of bolts having different outer diameters. Can be screwed.

The invention of claim 6 is characterized in that, in the invention of claim 5, a locking projection for locking to the screw groove of the bolt is also formed in a new facing portion in which the piece body is turned upside down. There is.

According to the invention of claim 6, since the facing portions of the front and back surfaces of the piece body that can be inverted on the front and back are formed with locking projections that lock into the screw grooves of the bolts, the facing portions of the remaining piece bodies. The same screwed body can be screwed to a plurality of bolts having different outer diameters even if the locking projection is not formed.

The invention of claim 7 is characterized in that, in any of the inventions of claims 3 to 6, locking projections are formed on the facing portions of all the pieces facing the bolts.

According to the invention of claim 7, since the locking projections that engage with the screwing of the bolts are formed on the facing portions of all the pieces, the number of locking points for the screwing of the bolts increases. The screwing coupling force of the screwed body screwed to the bolt in the partially locked state is increased.

The invention of claim 8 is the invention of any one of claims 1 to 7, wherein the specific piece body holding portion provided in the screwed body main body for holding the specific piece body holds the specific piece body. It is characterized in that a plurality of bolts are provided along the axial direction of the bolt so that they can be held at different positions along the axial direction of the bolt.

The screwing structure of the screwed body to the bolt is different from the normal screwing of bolts and nuts, and is screwed by a partially locked structure. Therefore, for example, the screwed body body is attached to the protruding end of the bolt. It covers and locks the locking projection on the facing portion of the piece body to the screw groove at the protruding end. Therefore, since the protruding end of the bolt is short, the locking protrusion on the facing portion of the piece body may not reach the screw groove of the protruding end. In this case, according to the invention of claim 8. , The holding position of the bolt of the specific piece body along the axial direction with respect to the screwed body body is changed so that the locking protrusion of the specific piece body is locked in the screw groove at the protruding end of the bolt. This makes it possible to lock the locking projection of the specific piece body with the screw groove at the protruding end of the bolt.

The invention of claim 9 is a screwed body that can be screwed to a plurality of bolts having different thread groove pitches.
A first piece body having a first facing portion facing the outer surface of the bolt and having a first locking projection formed on the first facing portion to lock the screw groove of the bolt.
A second locking portion that has a first piece body holding portion that holds the first piece body and a second facing portion that faces the outer surface of the bolt, and is locked to the screw groove of the bolt in the second facing portion. The body of the screwed body with protrusions and
With
The first piece body holding portion can hold the first piece body at both a first position with respect to the second locking projection and a second position deviated from the first position in the axial direction of the bolt. And
By changing the holding position of the first piece body with respect to the screwed body body, the spacing of the bolts of the first and second locking projections along the axial direction is changed, and the first piece body is changed. Both the first and second locking projections can be locked to the screw grooves of a plurality of bolts having different pitches surrounded by the first and second facing portions of the screwed body. It is characterized by being.

According to the invention of claim 9, the first piece body can be held at each of the first and second positions shifted along the axial direction of the bolt with respect to the first piece body holding portion of the screwed body body. Therefore, in the axial direction of the bolt between the first locking projection formed on the first facing portion of the first piece body and the second locking projection formed on the second facing portion of the screwed body body. The spacing along can be changed. By setting the interval to be the same as or an integral multiple of each pitch of a plurality of bolts having different thread groove pitches, the arrangement position of the bolts of the piece body with respect to the threaded body body along the axial direction can be set. By the change, the same screwed body can be screwed to a plurality of bolts having different pitches of the screw grooves with a partially locked structure. Further, the first and second locking protrusions are only partially locked to the screw groove of the bolt, but the screw is held in a state where the screw groove of the bolt is sandwiched by the two locking protrusions. Since it is locked in the groove, it can be firmly screwed to a plurality of bolts having different thread groove pitches without loosening the same threaded body.

The invention of claim 10 is the invention of claim 9, wherein the second locking projection is provided on a second piece body held by a second piece body holding portion provided on the screwed body main body. It is characterized by that.

According to the invention of claim 10, since the second locking projection is formed in the second piece body separate from the screwed body main body like the first locking projection, the first and the first The degree of freedom of changing the interval of each of the second locking projections is increased.

The invention of claim 11 is the invention of claim 10, wherein the second piece body holding portion can hold the second piece body at a plurality of different positions shifted along the axial direction of the bolt. It is a feature.

According to the invention of claim 11, the degree of freedom of changing the interval of the bolts of the first and second locking projections formed on the first and second pieces along the axial direction is increased. , It is possible to cope with a wide range of changes in the pitch of a plurality of bolts having different screw groove pitches.

The invention of claim 12 is a female screw member in which two locking projections to be locked in a screw groove of a bolt are provided at predetermined intervals in the axial direction of the bolt and are screwed to the bolt. hand,
The distance between the two locking projections is the common multiple of each pitch of the different screw grooves of the plurality of bolts so that the two bolts can be locked to any of the screw grooves of the plurality of bolts having different pitches. The feature is that it is set to a value close to this.

According to the invention of claim 12, the distance between the two locking projections provided on the female screw member is set to a common multiple of each pitch of different screw grooves of a plurality of bolts or a value close thereto. The same female screw member can be screwed to a plurality of bolts having different groove pitches with a partial locking structure.

The invention of claim 13 is the invention of claim 12, wherein the distance between the two locking projections is the least common multiple of each different pitch of the plurality of bolts to be screwed or a value close thereto. It is characterized by.

The invention of claim 13 is the invention of claim 12, wherein the distance between two locking projections formed inside the female screw member is the least common multiple of each different pitch of the plurality of bolts to be screwed, or the same. It is specified as an approximate value.

The invention of claim 14 comprises the female screw member according to claim 12 or 13, and a cover body that holds and accommodates the female screw member inside.
The female screw member and the cover body are made of a divided body divided in the axial direction of the bolt.
A female screw member holding portion for holding the female screw member is formed inside the cover body, and the divided cover bodies are assembled with each other, and the female screw member having a divided structure held inside is screwed with respect to the bolt. It is possible to maintain a wearable mutual position,
It is characterized in that a storage space capable of accommodating the bolt and a nut screwed to the bolt is provided inside the cover body.

According to the invention of claim 14, since the female screw member and the cover body are divided in the axial direction of the bolt, each of the female screw member and the cover body is moved in the radial direction of the bolt. A locking projection formed on a female screw member having a divided structure can be locked in the screw groove of the bolt to maintain the locked state. Therefore, even when the protruding end of the anchor bolt of the concrete foundation is arranged in the undercut-shaped space at the lower end of the cubicle as in the cubicle, the protruding end of the bolt is covered with the screwed body. Can be done.

The invention of claim 15 comprises a piece body having a first facing portion facing the outer peripheral surface of the bolt, and a piece body having a first facing portion.
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
On at least one of the insides of the first and second facing portions, two locking projections for locking into the screw groove of the bolt are provided at predetermined intervals along the axial direction of the bolt.
The distance between the bolts of the two locking projections along the axial direction is set so as to be able to be locked to any of the screw grooves of the plurality of bolts having different pitches of the screw grooves.

According to the fifteenth aspect of the present invention, two locking projections that lock into the screw groove of the bolt are provided along the axial direction of the bolt on at least one of the first facing portion of the piece body and the second facing portion of the screwed body body. The two locking projections are provided at a predetermined interval, and the interval along the axial direction of the bolts of the two locking protrusions is set so that they can be locked to any of a plurality of bolts having different screw groove pitches. Therefore, each of the two locking protrusions is only partially locked to the screw groove of the bolt, but the screw groove of the bolt is sandwiched between the two locking protrusions and is engaged with the screw groove. Since it is stopped, it can be firmly screwed to a plurality of bolts having different screw groove pitches without loosening the same screwed body.

The invention of claim 16 comprises a piece body having a first facing portion facing the outer peripheral surface of the bolt, and a piece body having a first facing portion.
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
Each of the first and second facing portions is provided with a locking projection that locks into the screw groove of the bolt.
The locking projections provided on the first and second facing portions are formed at different positions along the circumferential direction of the bolt at predetermined intervals along the axial direction of the bolt.
The piece body is oriented in the axial direction of the bolt with respect to the piece body holding portion so that the two locking projections can be locked to the screw grooves of two types of bolts having different thread groove pitches. It is characterized in that it can be held at a plurality of positions shifted along the line.

The invention of claim 16 is such that the first facing portion of the piece body and the second facing portion of the screwed body body can be locked to each of the screw grooves of two different types of bolts that are locked to the screw grooves of the bolt. In addition, since the piece body can be held at a plurality of positions shifted along the axial direction of the bolt with respect to the piece body holding portion of the screwed body body, the piece along the axial direction of the bolt with respect to the screwed body body. By changing the holding position of the body, the distance between the two locking protrusions described above is changed. That is, the same threaded body can be screwed to a plurality of groups of bolts having different common multiples of each pitch in a plurality of bolts having different thread groove pitches in a partially locked state.

The invention of claim 17 comprises a piece body having a first facing portion facing the outer peripheral surface of the bolt, and a piece body having a first facing portion.
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
On each of the facing portions, locking projections that lock into the screw grooves on the outer surface of the bolt are formed at predetermined intervals along the axial direction of the bolt.
On the back surface of the piece body, another first facing portion different from the first facing portion is provided, and another first locking projection is formed on the other first facing portion.
The piece body holding portion of the screwed body body is in a state of facing the bolt by selecting either the first facing portion or the other first facing portion by inverting the piece body. Can be held and
Moreover, a first locking projection and another first locking projection formed on the front and back first facing portions of the piece body and another first facing portion are provided on the second facing portion of the screwed body main body. The piece body holding portion of the screwed body body can hold the piece body so as to be arranged at different positions shifted along the axial direction of the bolt with respect to the second locking projection. It is a feature.

A plurality of bolts having different screw groove pitches in a screwed body provided with locking projections to be locked to the screw grooves of the bolts on the first facing portion of the piece body and the second facing portion of the screwed body body. In order to solve the problem that the same screwed body can be screwed to a plurality of groups of bolts having different common multiples of each pitch in a partially locked state, in the invention of claim 16, the screwed body main body is used. It is realized by making it possible to change the holding position of the bolt of the piece body along the axial direction. On the other hand, in the invention of claim 17, in order to solve the above-mentioned problems, a first locking projection and another first locking projection formed on the first facing portion and another first facing portion on the front and back of the piece body and another first facing portion. The screwing so that the 1 locking protrusion is arranged at a different position shifted along the axial direction of the bolt with respect to the second locking protrusion provided on the second facing portion of the screwed body body. The structure in which the piece body holding portion of the body body can hold the piece body is different from the invention of claim 16.

The screwed body according to the present invention is composed of a screwed body main body and one or a plurality of pieces held by the piece body holding portion of the screwed body main body, and when the piece body is one, the screwed body is composed of one or a plurality of pieces. When at least one of the facing portions, which is the surface surrounding the bolt in the piece body and the screwed body body, is formed with a locking projection for locking with the screw groove of the bolt, and the number of the piece bodies is plurality. By forming the locking projection on at least one of the facing portions of each piece, the piece is turned upside down or turned upside down to change the arrangement posture of the piece with respect to the bolt. As a result, the same screwed body can be screwed to a plurality of bolts having different outer diameters in a partially locked state.

Further, the screwed body according to the present invention is composed of a screwed body main body and one or a plurality of piece bodies held by a piece body holding portion of the screwed body main body, and there is one piece body. Is to form locking projections on each of the facing portions of the screwed body and the piece at a set interval along the axial direction of the bolt, or either one piece or the screwed body. Whether to form two locking projections at set intervals on the facing portions, and if there are a plurality of pieces, form one locking projection at each facing portion of different pieces at set intervals. By forming two locking protrusions on a specific piece at a set interval, the same screwing is performed on a plurality of bolts having the same or similar outer diameters and different thread groove pitches. The body is screwed in a partially locked state.

(A) and (b) are perspective views of the divided cover bodies C ₁₁ and C _{12 obtained by dividing the cover body C 1} into two, as viewed from different directions. (A) and (b) are perspective views of the states in which the _{divided cover bodies C 11} and C _{12 divided into two are hinged and connected from different directions.} (A) is a front view of the inside of each of the hinged split cover bodies C ₁₁ and C _{12 in} an open state so as to be arranged on the same surface, and (b) is (b). It is a J arrow view of a). (A) is a front view of the cover body C _{1 with the divided cover bodies C 11} and C ₁₂ closed, and (b) and (c) are the U _1- U ₁ line and U _{2 of (a), respectively.} It is each cross-sectional view of -U _{2 line.} (A) and (b) are _{perspective views of the female screw piece body E 1} as viewed from different directions. (A) is a front view of the female threaded piece body E ₁ , (b) is a sectional view taken along line VV of (a), and (c) and (d) are views of the female threaded piece body E ₁ , respectively. It is a right side view and the left side view. It is a perspective view of _{the cover body C 1} in which the divided cover bodies C ₁₁ and C ₁₂ in which the female screw piece body E ₁ is arranged are connected by a hinge, and the opening surface is arranged on the same plane. _{(A) is a front view of the cover body C 1 in} the same state of FIG. 7, and (b) and (c) are a J'arrow view and an X-ray cross-sectional view of (a). It is a bottom view of a state in which a pair of split cover bodies C ₁₁ and C _{12 in} which a female screw piece body E _{1 is assembled and housed are assembled.} (A) to (c) are schematic bottom views of the _{cover body C 1} showing the arrangement posture of the pair of female screw piece bodies E _{1 assembled and accommodated inside the pair of split cover bodies C 11} and C _12. .. (A) to (d) are perspective views showing the order in which the protruding end portion Ba of the bolt B and the nut N screwed to the protruding end portion Ba are covered _{by the cover body C 1.} It is a vertical cross-sectional view (YY line cross-sectional view of FIG. 9) in a state where the protruding end portion Ba of a bolt B and the nut N screwed to the protruding end portion Ba are covered by the cover body C _1. The protruding end portion Ba of the bolt B for fixing the metal box 95 constituting the cubicle 94 to the concrete foundation 93 and the nut N screwed to the protruding end portion Ba are covered with the _{cover body C 1 according to the present invention.} It is the whole perspective view of the state. (A), (b), the protruding end portions Ba and the nut N of bolts B disposed in undercut space 96 formed at the lower end of the metal box 95 of the cubicle 94 is covered with the cover member C ₁ It is a front view of the front and back. (A) ~ (c) is internally threaded piece body E ₂ only one of the pair of split cover body C _21, C ₂₂ is held constituting the cover body C _2, and the internal thread piece body E _2, the internal thread piece are partial female screw portion F ₃ in at least one of the divided cover body C ₂₂ without holding the body E ₂ is formed, of the internal thread piece body E ₂ by vertically inverted, the same cover C ₂ is outer diameter two different It is a top view which shows that it is screwed to bolts B ₁ and B _2. (A) and (b) are a front view and a vertical sectional view of the female screw member K according to the present invention, respectively, and (c) and (d) are the same for _{bolts B 2} and B _{4 having different pitches, respectively.} It is a vertical cross-sectional view of the state where the female screw member K of is screwed. It is a schematic vertical cross-sectional view of the screwed body A _{1 in which the female thread piece bodies E 2} and E ₃ are held on the pair of split screwed body main bodies 71a and 71b, respectively. It is a schematic vertical cross-sectional view of _{the screwed body A 1 in a state where the female threaded piece body E 3} is turned upside down and held with respect to the divided screwed body main body 71b. It is a schematic longitudinal sectional view of the threaded body A _2. It is a table which shows the pitch, the outer diameter, the effective diameter and the valley diameter of a plurality of metric screws and wit screws.

Hereinafter, the present invention will be described in more detail with reference to a plurality of examples.

_{First, the cover body C 1} which is the screwed body of the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. The cover body C ₁ is a tubular member having a top wall portion that covers both the protruding end portion Ba of the bolt B and the nut N screwed to the protruding end portion Ba, and is a cylindrical peripheral wall portion 1. One of the openings along the cylindrical axis direction Q of the above is closed by the top wall portion 2. The cover body C ₁ has a configuration in which a pair of divided cover bodies C ₁₁ and C ₁₂ divided in half along the tubular axis direction Q are hinged and connected. The split cover bodies C ₁₁ and C ₁₂ are formed with a pair of hinge pins 5 and a pair of pin fitting grooves 6 which are hinged to each other at the portions of the first opening end faces 3 and 4 which are in close contact with each other. At the same time, a pair of locked pieces 9 and a pair of locking projections 11 having a square flat plate shape are formed on the other portions of the second opening end faces 7 and 8, respectively. The pair of locked pieces 9 are _{formed so as to project from the second opening end surface 7 of the split cover body C 11} in the tangential direction of the cylindrical peripheral wall portion 1, and the pair of locking protrusions 11 are formed. The split cover body C ₁₂ is formed so as to face the second opening end surface 8. On the outside of the first opening end surface 3 of the split cover body C ₁₁ , short columnar pin forming body portions 12 are formed so as to face each other along the tubular axial direction Q at predetermined intervals along the tubular axial direction Q. The hinge pins 5 are formed on the inner facing surfaces of the pin forming body portions 12 so as to face each other along the tubular axial direction Q. The tubular axis direction Q means, to be exact, the tubular axis direction.

On the outside of the first opening end surface 4 of the split cover body C ₁₂ , a pair of similarly short columnar columns arranged inside the pair of pin forming body portions 12 arranged at predetermined intervals without a gap. The pin fitting groove forming body portions 13 are formed so as to face each other along the tubular axial direction Q at predetermined intervals, and each pin fitting groove forming body portion 13 has a first opening end surface of the _{split cover body C 12.} Along the tangential direction of the portion 4, the side of the accommodating opening 10 for accommodating the protruding end Ba of the bolt B and the nut N screwed to the protruding end Ba of the _{split cover body C 12 is closed, and the opposite is true.} A pin fitting groove 6 [see FIG. 1 (b)] having an opening on the side of the pin is formed. Therefore, as shown in FIG. 1 (a), in a state where the opening of the pair of divided cover body C _11, C ₁₂ are arranged to be positioned on the same plane, one split cover body C ₁₁ After inserting and fitting each of the hinge pins 5 of the above into the inside through the opening along the tangential direction of the pin fitting groove 6 of the other split cover body C _{12, [this state is shown in FIG. 2 (a). When the split cover bodies C 11} and C ₁₂ are relatively rotated in the direction in which the accommodation openings 10 are close to each other around the pair of hinge pins 5, the split cover bodies C ₁₁ and As _{shown in FIG. 2B, the first opening end faces 3 and 4 of C 12} are close to each other in the middle of assembly and are in contact with each other in the assembled state. The hinge pin 5 does not come off, and the divided cover bodies C ₁₁ and C ₁₂ are rotatably connected to each other while maintaining the hinged connected state.

In the portion of the split cover body C _{12 where} the pair of locking projections 11 are formed, a pair of square flat plate-shaped locked pieces 9 of _{another split cover body C 11 can be arranged in close contact with each other.} It is a flat contact plane 14. At the center of a pair of square flat plate-shaped locked pieces 9 provided on the split cover body C ₁₁ , a square shape is locked with a pair of locking protrusions 11 provided on _{another split cover body C 12.} The locked hole 15 is formed.

As described above, the pair of split cover bodies C ₁₁ and C ₁₂ are hinged to each other around the pair of hinge pins 5, and in this state, the pair of split cover bodies C ₁₁ and C ₁₂ are relatively rotated. When the first open end faces 3 and 4 and the second open end faces 7 and 8 of the divided peripheral wall portions 1a and 1b are brought into contact with each other, the pair of locked pieces 9 of the _{divided cover body C 11 are separated from each other.} It is arranged outside each of the close contact planes 14 of the split cover body C ₁₂ , and is brought into close contact with the close contact planes 14. In this state, each locked piece 9 is slightly elastically deformed to the outside and then restored to its original shape. Then, the locked holes 15 formed in the locked pieces 9 and the _{locking projections 11 formed in the split cover body C 12} are locked to form a pair of split cover bodies. C ₁₁ and C ₁₂ are assembled integrally. Further, in the assembled state of the pair of split cover bodies C ₁₁ and C ₁₂ , naturally, the third opening end faces 16 and 17 of the split top wall portions 2a and 2b also come into contact with each other. As shown in FIGS. 4 and 10, the first, second and third opening end faces 3, 4, 7, 8, 16 and 17 described above are hermetically sealed, that is, airtight and watertight. It has a double-walled structure with a stepped portion in order to enhance both of them.

Further, the cover body C ₁ not only covers the protruding end portion Ba of the bolt B and the nut N screwed to the protruding end portion Ba, but also covers a part of the inside of the _{cover body C 1 in a covered state.} By locking the thread of the protruding end portion Ba of the bolt B, the _{position of the cover body C 1} covering the protruding end portion Ba of the bolt B is maintained, and in an extreme case, the protrusion _{The structure is such that the cover body C 1} does not come off with respect to the end portion Ba. In order to realize this, a pair of block-shaped female threaded pieces E _{1 described later having each partial female threaded portion F 1} and F ₂ partially inserted between the threads of the protruding end portion Ba of the bolt B. On the inner peripheral surfaces of the divided cover bodies C ₁₁ and C ₁₂ , fitting assembly grooves 23a and 23b for assembling the _{female screw piece body E 1 are formed so as to face each other.} .. Further, in a state where the pair of split cover bodies C ₁₁ and C ₁₂ are assembled in a cylindrical shape, a lower end opening 18 [see FIGS. 3 (b) and 10] is formed in a portion facing the top wall portion 2, and FIG. In (b), 21 and 22 indicate the lower end surfaces of the _{divided cover bodies C 11} and C ₁₂ in contact with the substrate surface 91a on which the bolt B protrudes when _{the cover body C 1 is used.}

The female screw piece body E ₁ described above is used by being assembled in a facing state inside each of the split cover bodies C ₁₁ and C _{12 connected by a hinge.} That is, as shown in FIGS. 5 and 6, the female screw piece body E ₁ has bolts B having different outer diameters on the planes 32, 33a (33b) of the rectangular parallelepiped block-shaped piece body 31 which are back to back with each other. Correspondingly, the facing recesses 34, 35 having a semicircular cross section of different sizes are formed along the tubular axial direction Q in a state of being incorporated in _{the divided cover bodies C 11} and C _{12, and the facing faces are formed. Partial female threaded portions F 1} and F ₂ having a central angle of approximately 180 ° corresponding to bolts B having different outer diameters are formed on the inner peripheral surfaces of the recesses 34 and 35, respectively. The inner peripheral surfaces of the facing recesses 34 and 35 are facing portions facing each other. Internally threaded piece body E ₁ has been partially screwed into the projecting end Ba of bolt B, and the state covering the projecting end Ba with the cover member C _1, the cover member C ₁ is the projecting end Since it is sufficient to prevent it from coming off from Ba, the female threaded portions F ₁ and F ₂ formed in the facing recesses 34 and 35 of the piece body 31 are all threads of the protruding end portion Ba of the bolt B. Since it does not need to be screwed to, it is a partial female thread. Further, as will be described later, since the female screw piece body E ₁ may be used by being turned upside down, each partial female screw portion F is formed at both ends of the facing recesses 34 and 35 along the tubular axis direction Q. ₁ and F ₂ are formed, and one of them is screwed to the protruding end portion Ba of the bolt B in a partially locked state. In FIG. 6B, F ₁ a and F ₂ a indicate the threaded portions of the female threaded portions F ₁ and F ₂ , respectively.

_{The divided cover bodies C 11} and C ₁₂ are formed on the planes 36 and 37 which are orthogonal to the planes 32 and 33a (33b) on which the facing recesses 34 and 35 of the piece body 31 are formed and are back to back. A plurality of fitting protrusions for integrally assembling the _{piece body body 31 inside the divided cover bodies C 11} and C ₁₂ by being fitted into the fitting assembly grooves 23a and 23b formed so as to face the inner surface of the above. The portions 38 are formed along the fitting direction R with a constant pitch Se along the direction orthogonal to the fitting direction R of the piece body 31 with respect to the _{divided cover bodies C 11} and C _12. The upper and lower surfaces along the insertion direction R of the fitting projections 38, it is formed from both ends along the said fitting direction R so slightly becomes gradually thicker toward the center, divided cover body C _11, Arrangement positions of a plurality of (three in the embodiment) fitting protrusions 38 formed on the back-to-back flat surfaces 36 and 37, which are fitted into C _{12 in a press-fitted state, along the tubular axial direction Q.} Are the same. The wall thickness Te at both ends along the fitting direction R of the fitting protrusion 38 is set to the inner width We of the base end along the fitting direction of the fitting groove 39 formed between the fitting protrusions 38 that move up and down. Equally, the pitch (spacing) of each fitting groove 39 is the same as half of the pitch Se of the fitting protrusion 38 and the fitting groove 39. As a result, the relationship (Te = We = Se / 2) is established. The remaining two surfaces of the piece body 31 facing each other back to back are two surfaces because one of them is the upper surface and the other is the lower surface due to the change of the facing holding posture of _{the pair of female screw pieces E 1.} Are collectively referred to as upper and lower surfaces 41.

Further, the table of FIG. 20 shows the pitch, outer diameter, effective diameter and valley diameter of a plurality of metric screws and wit screws. Partial female threaded portion F ₁ includes M10 (outer diameter 10 mm screw), M12 (outer diameter 12 mm screw), W3 / 8 (witt screw with 16 threads per inch), and W1 / 2 (1). Applied to wit threads with 12 threads _{per inch), the partial female thread F 2} is applied to M16 (outer diameter 16 mm thread) and W5 / 8 (wit thread with 11 threads per inch). Applies. It should be noted that, as the target of screwing of the female threaded parts F ₁ and F ₂ of each part, not only the commonly used metric screw but also the wit screw is included. Although the wit screw is abolished in the JIS screw standard. , Especially due to the fact that the whit screw remains as a result of continued use in the building industry and the building or the building is still in use.

As described above, the partial female threaded portion F ₁ has a larger outer diameter difference of the bolt to be partially screwed _{than the partial female threaded portion F 2.} In other words, the one type of partial female screw portion F _1, it is necessary to partially screwed for large plurality of types of bolts outer diameter difference. In order to solve this, by widening the facing distance between the pair of female threaded pieces E ₁ in which the partial female threaded portions F ₁ are arranged to face each other, the partial screwing _{is performed on the bolt B 2 of} M12 and the bolt B _{5 of W1 / 2.} As a means for realizing this, a configuration is adopted in which the arrangement position can be changed along the facing direction of each piece body 31 in a state where the upper and lower surfaces 41 of the piece body 31 are inverted. Specifically, by forming the partial female screw portion F ₂ , the planes 33a and 33b remaining at both ends in the width direction are provided with a step 43 along the fitting direction R, and the fitting direction R is provided. A pair of female threads are provided by providing a fitting protrusion 44 fitted in the fitting grooves 24a and 24b formed in the _{divided cover bodies C 11} and C ₁₂ , respectively, in a portion of the flat surface 33b protruding along the above. The interval along the opposite direction of the piece body E _{1 can be widened.}

The pair of female threaded pieces E ₁ described above can be assembled to the divided cover bodies C ₁₁ and C ₁₂ constituting the cover body C _{1 with either one of} the female threaded portions F 1 or F ₂ facing each other. Therefore, on the inner peripheral surfaces of the divided cover bodies C ₁₁ and C ₁₂ , each fitting protrusion 38 formed on each of the back-to-back planes 36 and 37 of the piece body 31 along the tubular axis direction Q, respectively. The plurality of fitting assembly grooves 23a and 23b for fitting the fittings have the same pitch Sc as the forming pitch Se of the fitting protrusion 38, and face each other in the radial direction of _{the divided cover bodies C 11} and C _{12, respectively.} It is formed. That is, as shown in detail in FIGS. 1 to 3, in particular, FIG. 3, the plurality of side plates 25a and 25b have the pitch Sc in order to form the plurality of fitting assembly grooves 23a and 23b. , The fitting assembly grooves 23a and 23b are formed between the side plates 25a and 25b which are arranged so as to face the inner peripheral surfaces of the divided cover bodies C ₁₁ and C _{12 and which move up and down.} The inner widths Wc of the fitting assembly grooves 23a and 23b formed in the divided cover bodies C ₁₁ and C ₁₂ are the same as the wall thickness (plate thickness) Tc of the side plate bodies 25a and 25b, and the pitch Sc is the same. Is half of. Therefore, the relationship of (Tc = Wc = Sc / 2) is established, _{and the relationship with the female thread piece body E 1} is (Tc = Te, Wc = We, Sc = Se).

Further, at the same position along the tubular axis direction Q and at the same height position as the side plates 25a and 25b arranged so as to face each other along the direction orthogonal to the tubular axial direction Q, the partial female threads in the piece body 31 _{Back plate bodies 26a and 26b are arranged so that one} of the two planes 33a and 33b on the side on which the portion F _{2 is formed is brought into contact with the front end surfaces 26a 1} and 26b 1, and the back plate bodies 26a and 26b are arranged. Fitting grooves 24a and 24b for partially fitting the fitting protrusions 44 formed on the flat surface 33b of the piece body 31 are formed at one ends of the side plates 25a and 25b along the opposite directions, respectively. Has been done.

Further, the diameter direction of the divided cover body C _11, C _12, fitting the assembly groove 23a of each of the divided cover body C _11, C _12, to 23b, to fit the fitting projections 38 of the female screw piece body E _{1 Then, relatively, the side plates 25a and 25b of the divided cover bodies C 11} and C ₁₂ are fitted into the fitting groove 39 of the female screw piece body E ₁ so as to face each other back to back of the piece body 31 in total 3 When any one of the planes 32, 33a, 33b of the surface _{abuts on the front end faces 26a 1} , 26b ₁ of the back plate bodies 26a, 26b of the _{divided cover bodies C 11} and C ₁₂ , the divided covers are formed. inside the body C _11, C _12, internally threaded piece body E ₁ in each same shape, after being placed on substantially the same position along the tube axis direction Q, close to each of the divided cover body C _11, C _{12, The upper surface is a tubular cover body C 1} whose top surface is closed by the top wall portion 2. As a result, in a state where a pair of female threaded pieces E ₁ are arranged facing each other and a partial female threaded portion F ₁ (F ₂ ) is formed on the inner peripheral surface, the partial female threaded portion formed on each female threaded piece body E ₁ is formed. F ₁ (F ₂ ) needs to be shifted by half (P / 2) _{of the pitch P 0} of the thread of the bolt B along the axial direction Q. Here, the "thread pitch P ₀ of the bolt B" refers to the "average pitch" of the pitches of a plurality of types of bolts B to which the partial female thread portion F ₁ (F _{2) is screwed.}

Further, in FIGS. 1, 2 and 4, a filling opening 27 is formed in the intermediate portion between the lower end side plate 25b and the lower end opening 18 of the divided peripheral wall portion 1b of _{one of the divided cover bodies C 12, and the filling opening 27 is formed.} The opening 27 is closed by a closing plate portion 28 having the appearance of a screw head. Then, the filler 92 is filled in the internal space 29 in which the nut N is arranged among the space portions formed between the protruding end portion Ba and the nut N of the bolt B and the cover body C _{1 covering them.} In order to reliably prevent corrosion of the protruding end portion Ba of the bolt B and the nut N, the filling material 92 is filled in the internal space 29 from the filling opening 27 formed by removing the closing plate portion 28. If it is not necessary to fill the filling opening 27, the filling opening 27 may be used while being closed by the closing plate portion 28.

Then, using the cover member C ₁ and the pairs of internally threaded piece body E ₁ as described above, the projecting end portion Ba of the bolt B, the cover body C ₁ with respect to the projecting end portion Ba is not displaced in the axial direction To cover it in the state, do as follows. Since FIG. 10 is a diagram for schematically explaining the holding posture of the pair of female screw pieces E ₁ , the side plates 25a and 25b and the back plate 26a of the _{divided cover bodies C 11} and C _{12 are shown.} 26b is a simplified display. A total of three types of facing holding postures can be selected for the one-to-one set of female screw pieces E _{1 depending on the arrangement of the bolts B.} That is, as shown in FIG. 10 (a), the partial female screw portion F ₁ of each frame body 31 is opposed, moreover the fitting projection 44 formed in a portion of the back side of the plane 33b, the split cover body C _When arranged so as to be fitted into the fitting grooves 24a and 24b of 11 and C _{12 , the metric screw bolt B 2} (M12) having an outer diameter of 12 mm and the wit screw bolt B _{5 having 12 threads per inch} Partial screwing is possible for both (W1 / 2). _{Further, when the upper and lower surfaces 41 of each female screw piece body E 1} are inverted while maintaining the state in which the _{partial female screw portions F 1} face each other from the first holding posture described above, as shown in FIG. 10 (b), The flat surface 33b on the back side of the piece body 31 comes into contact with _{the front end faces 26a 1} and 26b ₁ of the back plate bodies 26a and 26b of _{the split cover bodies C 11} and C ₁₂ , and each piece is in contact with the first holding posture. Due to the close proximity of the body 31 to both the metric screw B _{1 (M10) with an outer diameter of 10 mm and the wit screw B 4} (W3 / 8) with 16 threads per inch, partial threads It becomes a wearable second holding posture. Further, when the face-to-face of each piece body 31 is inverted from the first and second holding postures, as shown in FIG. 10 (c), the plane 32 of the piece body 31 becomes each divided cover body C. _{By abutting on the front end faces 26a 1} , 26b ₁ of the back plate bodies 26a, 26b of 11, C _12, the female threaded portions F _{2 of} each part face each other, and the metric screw bolt B ₃ (M16) having an outer diameter of 16 mm and It has a third holding posture that allows partial screwing to both _{bolts B 6} (W5 / 8) of a wit screw having 11 threads per inch. By flipping each female screw piece body E _{1 upside down or upside down in this way, the holding posture of each female screw piece body E 1} with respect to the cover body which is a screwed body can be changed, and a plurality of bolts B having different outer diameters can be changed. _{1 to} B ₆ can be screwed onto the same threaded body.

_{Therefore, one} of the above-mentioned first to third holding postures is selected according to the size of the bolt B to be covered by the cover body C 1 and the protruding length of the protruding end portion Ba of the bolt B. , One-to-one set of each female screw piece body E ₁ is assembled and accommodated inside each of the divided cover bodies C ₁₁ and C _12. That is, the holding postures corresponding to the protruding end portions Ba of the bolts B are selected from the first to third holding postures, and the divided cover bodies C ₁₁ and C ₁₂ are hinged so as to be in the holding postures. Assemble integrally inside. An example shown in FIGS. 7 to 12 is a metric screw bolt B ₂ (M12) having an outer diameter of 12 mm, in which a nut N is double screwed to a protruding end portion B _{2 a of the bolt B 2.} Each female screw piece body E ₁ is assembled to _{each of the split cover bodies C 11} and C _{12 at} a position where the lower end of the female screw piece body E ₁ is closest to the nut N in the upper stage. For this reason, out of a total of three stages (three) of fitting protrusions 38 provided on the planes 36 and 37 on both side surfaces of the piece body 31 of each female screw piece body E _{1, two are counted from the upper stage.} The fitting protrusion 38 is fitted into the fitting assembly grooves 23a and 23b provided in the _{divided cover bodies C 11} and C ₁₂ , so that the female threaded pieces are inside the _{divided cover bodies C 11} and C _{12, respectively.} E ₁ is assembled.

Then, in order to cover the protruding end portion Ba of the bolt B protruding from the substrate surface 91a and the nut N screwed to the protruding end portion Ba with the cover body C ₁ , the procedure is as follows. That is, as shown in FIG. 11A, on the upper surface of the substrate surface 91a, the hinge-connected split cover bodies C ₁₁ and C ₁₂ are opened to the maximum, and in this state, the hinge-connected splits are each split. the lower end surfaces 21, 22 of the cover body C _11, C ₁₂ is slid to the upper surface of the substrate surface 91a, as shown in FIG. 11 (b), within the housing opening 10 of one of the divided cover body C ₁₂ The protruding end portion Ba of the bolt B and the nut N are accommodated in the facing recess 34 in which the partial female screw portion F _{1 of the female screw piece body E 1 is formed.} It is housed inside the split cover body C _{11. In this state, as shown in FIG. 11C, one split cover body C 12} accommodating the protruding end portion Ba of the bolt B and the half along the axial direction of the nut, and the other split cover. When the body C ₁₁ is rotated by a hinge, _{a pair of upper and lower locking projections 11 formed on a portion of the split cover body C 12} facing the accommodating opening 10 in the split peripheral wall portion 1b, and the other split cover body C ₁₁ The locked holes 15 are locked to each other, and the divided cover bodies C ₁₁ and C ₁₂ are integrally assembled. In this state, as shown in FIGS. 11D and 12, the first opening end faces 3 and 4 and the second opening end faces 7 of the divided peripheral wall portions 1a and 1b of the _{divided cover bodies C 11} and C _{12 are connected to each other.} 8 and the third opening end faces 16 and 17 of the divided top wall portions 2a and 2b are in close contact with each other in a polymerized wall (double wall) structure, so that the peripheral wall portion 1 and the top wall portion 2 are divided into each. The opening-shaped part is in close contact with the seal. In FIG. 11D, 45 and 46 show the dividing lines of the peripheral wall portion 1 and the top wall portion 2 of the _{cover body C 1, respectively.} In FIG. 12, 91 indicates a substrate arranged on the upper surface of the concrete foundation 93.

The partial female screw portion F ₁ of the lower of the facing recesses 34 each partial female screw portion F ₁ of the formed upper and lower of each frame body 31 is partially screwed to the male screw portion of the projecting end portion Ba of the bolt B _{Therefore, the cover body C 1} does not come off with respect to the protruding end portion Ba of the bolt B. Further, from the filling opening 27 formed by removing the closing plate portion 28 formed on the split peripheral wall portion 1b of the split cover body C ₁₂ , the filling material 92 fills the internal space formed in the lower half portion of the _{cover body C 1.} Is filled, the corrosion of the protruding end portion Ba of the bolt B and the nut N screwed to the protruding end portion Ba can be prevented more reliably. When it is not necessary to fill the filler 92, the filling opening 27 may be left closed by the closing plate portion 28.

Therefore, an undercut-shaped space 96 is formed on the peripheral edge of the lower end of the metal box 95 constituting the cubicle 94 as shown in FIGS. 13 and 14, and the upper end of the bolt B embedded in the concrete foundation 93 is formed. The portion is constructed so as to project into the undercut-shaped space 96. _{However, according to the cover body C 1} according to the present invention, the protruding end portion Ba of _{the bolt B can be accommodated inside the split cover bodies C 11} and C ₁₂ from the side thereof, so that the protruding end portion Ba of the bolt B can be accommodated. Even if the top surface of the undercut-shaped space 96 exists in a portion close to directly above the bolt B and it is impossible to cover the cover body from directly above the protruding end portion Ba of the bolt B, the protruding end portion Ba can be covered.

_{Next, the cover body C 2} which is the screwed body of the second embodiment of the present invention will be described with reference to FIG. The cover body C _{1 of the} first embodiment has a configuration in which each of the divided cover bodies C ₁₁ and C ₁₂ holds an individual female screw piece body E _1, but the cover body C _{2 of the} second embodiment is one of the cover bodies C 2. The female screw piece body E ₁ is held upside down only in the split cover body C ₂₁ , and the other split cover body C ₂₂ has a facing recess 61 having a semicircular cross section forming a space for arranging the bolts B. , It is formed so as to face the facing recess 34 of the female screw piece body E ₁ held by one of the split cover bodies C _21. FIG. 15 (a), of the opposing facing recesses 34,61, partial female screw portion F ₃ is formed only on the side of the divided cover body C _22, FIG. 15 (b), only the side of the divided cover body C ₂₁ Partial female threaded portions F ₁ are formed in the split cover bodies C ₂₁ and C ₂₂ , and in FIG. 15 (c), partial female threaded portions F ₁ and F ₃ are formed on both sides of the split cover bodies C 21 and C 22, respectively. The left and right sets of FIGS. 15A to 15C _{show a state in which the female screw piece body E 1} is turned upside down, and the cover body C ₂ shows the female screw piece body E 1. ₁ is never flipped.

Therefore, in the holding posture in which the fitting protrusion 44 of the female screw piece body E ₁ is not fitted in the fitting groove 24a of the _{split cover body C 21 , two different bolts B 1} and B _{4 having similar outer diameters are used.} Is screwed to at least one of the female threaded portions F ₁ and F _{3 in a partially threaded state.} Further, in the holding posture in which the fitting protrusion 44 of the female screw piece body E _{1 is fitted into the fitting groove 24 a of the split cover body C 21 , two different bolts B 2} and B ₅ having similar outer diameters are respectively. It is screwed to at least one of the partial female threaded portions F ₁ and F _{3 in a partially screwed state. As a result, the cover body C 2} which is the same screwed body can be screwed to a total of four bolts B ₁ , B ₂ , B ₄ , and B _{5 having different outer diameters.}

Next, the female screw member K of the third embodiment of the present invention will be described with reference to FIG. The female screw member K can be screwed to a plurality of bolts having the same or similar outer diameters and different pitches of screw grooves (or threads). The female screw member K of the third embodiment has a nut shape, and has _{a bolt B 2 of M12 having a pitch P 2} (= 1.7500 mm) of a screw groove and a W1 of a pitch P ₅ (= 2.1167 mm) of a screw groove. It can be screwed to both bolts B _{5 of / 2. A pair of partial female threaded portions F 4} and F ₅ having a central angle smaller than 180 ° are formed on the inner peripheral surface of the nut-shaped member main body 62 with a set interval shifted by 180 ° in the circumferential direction. ing. In FIG. 16 (c), the interval G ₁ is the partial female threaded portion F in the case where the _{partial female threaded portion F 5} is arranged with the partial female threaded portion F 5 being arranged with a phase shift of 180 ° in the spiral direction along the direction away from _{the F 4. 4,} a distance along the axial direction of the member main body 62 of the F _5, a common multiple of the pitch P _2, P ₅ the screw grooves of the bolts B _2, B _5. Further, since _{the outer diameter of the bolt B 5} is slightly larger than the outer diameter of the bolt B ₂ , the inner diameter of the bolt hole 63 of the member main body 62 corresponds to the outer diameter of the _{bolt B 5 , and the bolt B 2} When the female screw member K is screwed, a slight gap is generated between the female screw member K and the bolt hole 63 of the member main body 62.

Therefore, as shown in FIGS. 16 (c) and 16 (d), the two bolts B ₂ and B _{5 having different outer diameters have an interval G 1} along the axial direction of the female thread member K. by being partially screwed into each partial female screw portion F _4, F _5, and the outer diameter approximates, same for two different types of bolts B _2, B ₅ pitch of spiral grooves (or threads) The female screw member K can be screwed in a partially screwed state.

_{Next, the screwed body A 1} of the fourth embodiment of the present invention will be described with reference to FIGS. 17 and 18. The screwed body A ₁ is held by the screwed body body 71 composed of a pair of split screwed body bodies 71a and 71b divided into two along the axial direction of the bolts B ₁₁ and B _{12, and each screwed body body 71.} It consists of a pair of block-shaped female screw pieces E ₂ and E _3. One female screw piece body E ₂ has a partial female screw portion F ₆ formed in one facing recess 72, and the other female screw piece body E ₃ has facing recesses 73 and 74 formed on the front and back facing surfaces, respectively. _{Partial female threaded portions F 7} and F ₈ are formed in the facing recesses 73 and 74, respectively. Bolts B ₁₁ and B ₁₂ are M10 bolt B ₁ and W3 / 8 bolt B ₄ , M12 bolt B ₂ and W1 / 2 bolt B ₅ , or M16 bolt B ₃ and W5 / 8 bolt B ₆ This is a combination (group) of bolts with similar outer diameters and different screw groove pitches. _{Further, the distances G 2} along the axial direction of the bolts B ₁₁ and B _{12 of the partial female screw portions F 6} and F ₇ formed in the facing recesses 72 and 73 facing each other are the bolts B ₁₁ and B. It is a value close to the common multiple of each pitch of _{12 different screw grooves.} In FIG. 17, reference numeral 75 denotes a bolt penetration space formed by the facing recesses 72 and 73 of the _{female screw pieces E 2} and E _3.

Further, as shown in Figure 18, the front and back flips to hold the internally threaded piece body E ₃ the divided threaded body 71b, bolt through the space 75 formed by the facing recesses 72 and 74 facing ' The inner diameter of each part is slightly smaller, and the space G _{3 between the female threaded parts F 6} and F ₈ is wider than the space G ₂ , and the pitch of the thread groove of _{the bolts B 13 and B 14 of another combination.} It is a value close to the common multiple.

As described above, _{according to the screwed body A 1} of the fourth embodiment, two groups of bolts having different common multiples of each pitch in the plurality of bolts B _{11 to} B _{14 having different thread pitches [one group of bolts].} The same screwed body A ₁ can be screwed to _{B 11} and B _{12 and bolts B 13} and B ₁₄ ] of other groups in a partially screwed state.

_{In the fourth embodiment, the partial female screw portions F 6} and F ₇ formed in the facing recesses 72 and 73 (74) of the pair of female screw pieces E ₂ and E ₃ are along the penetration direction of the bolt penetration space 75. In order _{to change the interval G 2} (G _{3 ), partial female thread portions F 7} and F ₈ are formed in the facing recesses 73 and 74 on the front and back sides of one female thread piece body E ₃ , respectively, and the female thread piece body E _{3 is formed.} Is adopted as a configuration that reverses the front and back. However, by forming a partial female thread portion only in each facing recess of the pair of female thread pieces and sliding one female thread piece body in the penetrating direction of the bolt penetration space to change the holding position, the pair of female threads The spacing of each partial female thread formed on the piece body along the penetrating direction can be changed.

Further, FIG. 19 shows the screwed body A _{2 of the} fifth embodiment of the present invention. The screwed body A ₁ of the fourth embodiment has partial female threaded portions in the facing recesses 72 and 73 (74) of the _{female threaded pieces E 2} and E ₃ held in a facing state on the divided screw body main bodies 71a and 71b, respectively. F ₆ and F ₇ (F _{8 ) are formed, and the female threaded portions F 6} and F ₇ (F ₈ ) are arranged to face each other in the bolt penetration space 75 (75'). On the other hand, in the screwed body A _{2 of the fifth embodiment, the female threaded piece body E 4} held by one of the split screwed body main bodies 71a has two partial female threaded portions F along the penetrating direction of the bolt penetrating space 75. ₈ and F ₉ are provided with a set interval G ₄ , and the other female thread piece body E ₅ is different in that the partial female thread portion is not formed, and the outer diameters are the same or similar, and the pitch The threaded body A ₂ can be screwed to a plurality of different bolts B ₁₁ and B _12. The set interval G ₄ is a common multiple of each pitch of the screw grooves of a _{plurality of bolts B 11} and B ₁₂ having the same or similar outer diameters, or a value close thereto.

In the present invention, the locking projection locked in the screw groove of the bolt is a bolt even if it is not a partially threaded portion having a central angle slightly smaller than 180 ° as in the above Examples 1 to 5. It may be a simple protrusion that is partially locked to the screw groove of.

A ₁ , A ₂ : Screw-on body
B: Unspecified bolt
Ba: Protruding ends of unspecified bolts B _{1 to} B ₆ , B _{11 to} B ₁₄ : Specific bolts
B ₂ a: Protruding end of a specific bolt
C ₁ , C ₂ : Cover body C ₁₁ , C ₁₂ , C ₂₁ , C ₂₂ : Split cover body
E _{1 to} E ₅ : Female thread piece body
F _{1 to} F ₉ : Partial female thread (locking protrusion)
P ₀ : Average pitch of threads of multiple bolts
P ₂ , P ₅ : Pitch of a specific bolt
34,35,72-74: Face-to-face recess (face-to-face part)

Claims (17)

A threaded body that can be locked to the thread grooves of multiple bolts with different outer diameters.
A piece body having a first facing portion facing the outer surface of the bolt, and
A piece body holding portion that has a second facing portion facing the outer surface of the bolt and holds the piece body so that the first and second facing portions are arranged so as to surround the bolt from the surroundings. With the main body of the screwed body,
Consists of
A locking projection that is locked to a screw groove on the outer surface of the bolt is formed on at least one of the first and second facing portions.
The piece body holding portion is
The first position where the locking projection can be locked in the screw groove of the bolt arranged in the bolt arrangement space formed by the first and second facing portions, and
By changing the arrangement position of the first facing portion with respect to the second facing portion and expanding the bolt arrangement space, the locking projection can be locked in the screw groove of another bolt having a diameter larger than that of the bolt. Second position and
A screwed body characterized in that the piece body can be held by changing to at least two positions. The screwed body according to claim 1, wherein the second facing portion is provided on a separate piece body separate from the screwed body main body. A threaded body that can be locked to the thread grooves of multiple bolts with different outer diameters.
A plurality of pieces are arranged so as to surround the circumference of the bolt, and a plurality of pieces having a locking projection to be locked in a screw groove of the bolt formed on at least one facing portion of the inner surface, and the plurality of pieces. A screwed body body having the same number of piece body holding portions to be attached, and a maintenance means for maintaining a constant arrangement position of a plurality of piece bodies held by the screwed body body.
With
Each piece body holding portion can be held by changing the holding posture of at least one piece body among the plurality of piece bodies, and by changing the holding position, the screw grooves of a plurality of bolts having different outer diameters can be formed. On the other hand, a screwed body characterized in that the locking projection can be locked. By flipping at least one of the plurality of pieces upside down and holding the piece body holding portion of the screwed body body, the radial arrangement position of the bolt of the facing portion facing the bolt of the piece body can be set. The screwed body according to claim 3, wherein the holding posture of the piece body is changed so as to be changed. The third or fourth aspect of the present invention, wherein at least one of the plurality of pieces is turned upside down to change the facing portion facing the bolt to change the holding posture of the piece. Screwed body. The screwed body according to claim 5, wherein a locking projection for locking to the screw groove of the bolt is also formed in a new facing portion in which the piece body is turned upside down. The screwed body according to any one of claims 3 to 6, wherein locking projections are formed on the portions of all the pieces facing the bolts. A specific piece body holding portion provided on the screwed body body for holding a specific piece body of the bolt can hold the specific piece body at a different position along the axial direction of the bolt. The screwed body according to any one of claims 1 to 7, wherein a plurality of screwed bodies are provided along the axial direction. It is a threaded body that can be screwed to multiple bolts with different thread pitches.
A first piece body having a first facing portion facing the outer surface of the bolt and having a first locking projection formed on the first facing portion to lock the screw groove of the bolt.
A second locking portion that has a first piece body holding portion that holds the first piece body and a second facing portion that faces the outer surface of the bolt, and is locked to the screw groove of the bolt in the second facing portion. The body of the screwed body with protrusions and
With
The first piece body holding portion can hold the first piece body at both a first position with respect to the second locking projection and a second position deviated from the first position in the axial direction of the bolt. And
By changing the holding position of the first piece body with respect to the screwed body body, the spacing of the bolts of the first and second locking projections along the axial direction is changed, and the first piece body is changed. Both the first and second locking projections can be locked to the screw grooves of a plurality of bolts having different pitches surrounded by the first and second facing portions of the screwed body. A screwed body characterized by being. The screwed body according to claim 9, wherein the second locking projection is provided on the second piece body held by the second piece body holding portion provided on the screwed body main body. .. The screwed body according to claim 10, wherein the second piece body holding portion can hold the second piece body at a plurality of different positions deviated along the axial direction of the bolt. A female screw member that is internally provided with two locking projections that are locked in the screw groove of a bolt at predetermined intervals in the axial direction of the bolt and is screwed onto the bolt.
The distance between the two locking projections is the common multiple of each pitch of the different screw grooves of the plurality of bolts so that the two bolts can be locked to any of the screw grooves of the plurality of bolts having different pitches. A female screw member characterized in that the value is set to a value close to this. The female screw member according to claim 12, wherein the distance between the two locking projections is the least common multiple of each different pitch of the plurality of bolts to be screwed, or a value close thereto. The cover body comprises the female screw member according to claim 12 or 13 and holds and accommodates the female screw member inside.
The female screw member and the cover body are made of a divided body divided in the axial direction of the bolt.
A female screw member holding portion for holding the female screw member is formed inside the cover body, and the divided cover bodies are assembled with each other, and the female screw member having a divided structure held inside is screwed with respect to the bolt. It is possible to maintain a wearable mutual position,
A screwed body characterized in that a storage space capable of accommodating the bolt and a nut screwed to the bolt is provided inside the cover body. A piece body having a first facing portion facing the outer peripheral surface of the bolt,
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
On at least one of the insides of the first and second facing portions, two locking projections for locking into the screw groove of the bolt are provided at predetermined intervals along the axial direction of the bolt.
The distance between the bolts of the two locking projections along the axial direction is set so as to be able to be locked to any of the screw grooves of the plurality of bolts having different pitches of the screw grooves. body. A piece body having a first facing portion facing the outer peripheral surface of the bolt,
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
Each of the first and second facing portions is provided with a locking projection that locks into the screw groove of the bolt.
The locking projections provided on the first and second facing portions are formed at different positions along the circumferential direction of the bolt at predetermined intervals along the axial direction of the bolt.
The piece body is oriented in the axial direction of the bolt with respect to the piece body holding portion so that the two locking projections can be locked to the screw grooves of two types of bolts having different thread groove pitches. A screwed body characterized in that it can be held at a plurality of positions shifted along the line. A piece body having a first facing portion facing the outer peripheral surface of the bolt,
It has a second facing portion facing the outer surface of the bolt, and holds the piece body so that the second facing portion and the first facing portion of the piece body are arranged so as to surround the bolt in the circumferential direction. A screw body with a piece holding part and a screw body
Consists of
On each of the facing portions, locking projections that lock into the screw grooves on the outer surface of the bolt are formed at predetermined intervals along the axial direction of the bolt.
On the back surface of the piece body, another first facing portion different from the first facing portion is provided, and another first locking projection is formed on the other first facing portion.
The piece body holding portion of the screwed body body is in a state of facing the bolt by selecting either the first facing portion or the other first facing portion by inverting the piece body. Can be held and
Moreover, a first locking projection and another first locking projection formed on the front and back first facing portions of the piece body and another first facing portion are provided on the second facing portion of the screwed body main body. The piece body holding portion of the screwed body body can hold the piece body so as to be arranged at different positions shifted along the axial direction of the bolt with respect to the second locking projection. Characterized screwed body.

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