JP2005163998A - Nut and operation device of same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nut which moves to an advancing direction without rotation with respect to a bolt, and locks the nut in a predetermined position so as not to advance and move. <P>SOLUTION: The nut includes an insertion hole 5 for inserting a male screw body into a casing 2, and a part of the insertion hole 5 is structured so as to form a tapered hole 6 of which a rear side diameter is enlarged. The tapered hole 6 is provided with a female engaging member 10 with a female screw 12 formed on an inner surface so as to move back and forth, and is provided with a locking means 23 for locking and releasing a lock so that the female engaging member 10 is energized forward, the female engaging member 10 is geared with the male screw body inserted by forward movement of the female engaging member 10, and is separated from the male screw body by backward movement, and an advancing position of the female engaging member 10 is held. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a nut used as a connector and an operation device for the nut.

  2. Description of the Related Art Conventionally, nuts that can be fastened to bolts without rotating the nuts are known as nuts that are used as connecting members. For example, a structure shown in FIG.

  The nut 101 shown in FIG. 21 is formed with a tapered hole 102 having an enlarged rear diameter inside and an insertion port 103 on the front side, and a sliding guide protrusion 104 along the axial direction on the inner surface of the tapered hole 102. And a plurality of casings 105 formed by dividing them in the circumferential direction, and an outer surface is formed into a tapered surface along the tapered hole 102 and a female screw 106 is formed on the inner surface, and between the sliding guide protrusions 104 in the axial direction. A wedge-shaped female locking member 107 interposed so as to be slidable, and a compression spring 109 urging the female locking member 107 toward the small-diameter insertion port 103 side of the tapered hole 102 via a spring receiver 108 , And a lid 110.

  Then, the nut 101 is inserted into the bolt 111 which is a male screw body as shown by the arrow A in FIG. 21 from the insertion port 103 without rotating, so that the female screw 106 of the divided female locking member 107 becomes the bolt 111. The female locking member 107 moves to the larger diameter side against the compression spring 109 by engaging with the male screw 112, and the inner diameter of the female screw hole formed by the plurality of female locking members 107 is increased. Then, the nut 101 can be inserted to a predetermined position of the bolt 111, and when the insertion is completed, each female locking member 107 is moved forward by the urging force of the compression spring 109, and the female screw 106 is the male screw 112 of the bolt 111. And the nut 101 can be fastened to the bolt 111 (see, for example, Patent Document 1).

  By the way, as shown in FIG. 22, for example, the nut 101 as described above is provided on a fixed bolt 111 and is always urged by a spring 113 in the direction of arrow A, which is the direction in which the nut 101 can travel, to a member such as a work It may be desired to press 114 with the nut 101.

  However, when the member 114 is removed from such a pressed state of the member 114 and the member 114 is removed when the member 114 is to be pressed at the position shown in FIG. In order to move in the advanceable direction A, it is necessary to remove the member 114 and install the member 115 while holding the nut 101 by hand so as not to move, which is extremely difficult.

In addition to the replacement of the above members, it is not possible to cope with the case where the nut 101 is desired to be stopped at a position in the middle of the bolt 111.
Japanese Utility Model Publication No. 55-48171

  An object of the present invention is to solve the above-described problems, for example, by enabling the nut to be locked and held at a desired position with respect to the bolt.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that an insertion hole for inserting the male screw body is formed in the casing and a part of the insertion hole is formed into a tapered hole whose diameter is increased on the rear side, The taper hole is provided with a female locking member having an internal thread formed on the inner surface so as to be movable back and forth, and the female locking member is urged forward, so that the female locking member is inserted by moving forward. In the nut that meshes with the male screw body and moves away from the male screw body by moving backward,
It is a nut provided with a lock means for locking so as to hold the forward position of the female locking member or releasing the lock.

  According to a second aspect of the present invention, in the first aspect of the present invention, the locking means includes a locking portion formed on the female locking member, and the locking portion is positioned in the advanced state of the female locking member. The nut is configured such that an insertion hole is formed in a portion of the casing, and the lock member is engaged and locked with the engagement portion through the insertion hole, or is released from the engagement portion to be unlocked.

  A third aspect of the present invention is the nut according to the first or second aspect of the present invention, wherein the casing is provided with a lock holding means that can hold or release the locked state of the lock member.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, a stopper groove formed in a circumferential direction in a casing of a portion where the rear surface of the female locking member is located in the advanced state of the female locking member; A long hole formed in the casing along the axial direction of the casing from one end side of the stopper groove, an annular contact portion that contacts the rear surface of the female locking member in the casing, and a fixed contact portion. And a locking member that includes a locking member that protrudes from the elongated hole to the outside and has an operating portion that is slidable in the elongated hole and the stopper groove.

  According to a fifth aspect of the present invention, an insertion hole for inserting the male screw body is formed in the casing, and a part of the insertion hole is formed into a tapered hole whose diameter is increased on the rear side, and a female screw is formed on the inner surface of the tapered hole. The female locking member is provided so as to be movable back and forth, and the female locking member is urged forward. The female locking member meshes with the male screw body inserted by the forward movement, and moves backward. A nut operating device provided with a locking means for locking or releasing the lock so as to be separated from the male screw body by movement of the female locking member and to hold the advance position of the female locking member, An operation device for a nut, characterized in that an operation means for automatically performing a lock operation and a release operation of a lock member in is provided.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the lock operation of the lock member in the lock means is performed by providing a lock operation member on the advancing side of the nut, and by locking the nut and the lock operation member relative to each other. This is a nut operating device in which the locking member is moved in the locking direction by the operating member to perform the locking operation.

  According to a seventh aspect of the present invention, in the fifth or sixth aspect of the present invention, a lock release operation member is provided outside the nut, and the lock release operation member is engaged with the lock means and locked in the locked state by the lock means. This is a nut operating device for releasing the means.

According to the nut of the present invention, the nut can be inserted in the forward direction without rotating the nut and the male screw body.
In addition, in the nut that can move in the forward direction without rotation as described above, when the nut is used in a state of being constantly urged forward by the urging means, the female locking member in the nut is locked by the locking means. By locking, the nut can be held so that it does not move forward by the biasing force.

Further, by locking the female locking member as described above, it can also be used as a normal nut that moves forward and backward by forward and reverse rotation.
In addition, according to the nut operating device of the present invention, it is convenient that the locking operation and the releasing operation can be automatically performed.

  The best mode for carrying out the present invention will be described based on the embodiment shown in FIGS.

1 to 8 show a first embodiment.
The casing 2 constituting the nut 1 is formed in a cylindrical shape, for example, a cylindrical shape whose outer peripheral surface is circular or polygonal. In the example shown in the figure, the outer peripheral surface is formed in a circular shape.

An insertion hole 5 having an insertion port 3 on the front side (B side in the figure) and an opening 4 on the rear side (C side in the figure) is formed in the casing 2 in an axial direction. The substantially front half of the insertion hole 5 is formed by a tapered hole 6, and the rear half is formed by a spring chamber 7.
The tapered hole 6 is formed in a tapered surface 8 whose inner diameter gradually increases from the front side B toward the rear side C, and the spring chamber 7 is formed in a cylindrical shape.

  On the tapered surface 8 of the tapered hole 6, a plurality of sliding guide ridges 9 that are long in the axial direction XX of the casing 2 are provided in a projecting manner with a predetermined interval in the circumferential direction as shown in FIG. ing. In the illustrated embodiment, three are provided at equal intervals in the circumferential direction. By forming the sliding guide protrusion 9, a guide space into which a female locking member 10 described later is fitted is formed between them.

  The guide space between the adjacent sliding guide ridges 9, 9 in the tapered hole 6 has a fan-like cross section as shown in FIG. 3, and a wedge-like vertical section as shown in FIG. The female locking member 10 is disposed so as to be slidable in the axial direction XX of the casing 2. In the illustrated example, three female locking members 10 are provided in the circumferential direction of the casing 2.

  Further, each female locking member 10 is formed in a wedge shape in which the circumferential length on the front side B is shorter than the circumferential length on the rear side C, and the outer circumferential surface is a tapered surface 11 along the tapered surface 8 of the tapered hole 6. Is formed. Further, on the inner peripheral surface, a female screw 12 formed by a part of a spiral centering on the axis of the casing 2 is formed, and in this example, three female locking members 10 in the illustrated example. A female screw hole is formed by the female screw 12. The female screw 12 is formed so as to protrude inward from the peripheral edge of the insertion port 3 and the inner surface of the sliding guide protrusion 9.

  As shown in FIG. 2, each female locking member 10 protrudes rearward from the rear end of each sliding guide member 9, and is common to the rear end of each female locking member 9. A spring receiver 13 is arranged.

Further, a spring receiver 14 made of a C-ring for holding a washer 15 is fixed to the rear part of the spring chamber 7, and a coil spring 16 as a biasing means is provided between the washer 15 and the spring receiver 13. The female locking member 10 is always urged toward the front side B, that is, the insertion port 3 side by the urging force of the coil spring 16 interposed in a compressed state.
In the above embodiment, the coil spring 16 is used as the biasing means. However, the biasing means may use an elastic body such as urethane or rubber in addition to the coil spring.

Next, the locking means of the female locking member 10 will be described.
A locking groove 17 is formed on the outer peripheral surface of the female locking member 10, one female locking member 10 of the three female locking members 10 in the illustrated example, The front surface is a locking portion 17a.

  The casing 2 has an insertion hole 18 extending inward and outward in a portion where the locking groove 17 is located at an advanced position where the female locking member 10 is engaged with a male screw body (bolt) 40 as will be described later. Is formed. Further, as shown in FIG. 3, notches 19 and 20 are formed in both the outer peripheral surfaces of the casing 2 on both sides of the insertion hole 18 in a direction perpendicular to the axial direction of the casing 2, Locking recesses 21 and 22 constituting lock holding means are formed on the bottom surfaces of the cutout grooves 19 and 20.

  A lock member 23 constituting a lock means is provided on the outer side of the casing 2. The lock member 23 includes a lock piece 24 that can be inserted into the locking groove 17 and the insertion hole 18, a first operation piece 25 that protrudes in the opposite direction to the protruding direction of the lock piece 24, and both sides of the lock piece 24. Leg portions 26, 27 formed in a crotch shape, locking projections 28, 29 that project from the front ends of both leg portions 26, 27 to form a lock holding means, and both leg portions 26, 27 It consists of the 2nd operation pieces 30 and 31 provided in the front-end | tip, and these are integrally formed with the metal plate. The lock member 23 is provided with both leg portions 26 and 27 slidably fitted in the notch grooves 19 and 20 of the casing 2, as shown in FIGS. 4 and 5. The lock piece 24 is disengaged from the locking groove 17 and the locking projections 28 and 29 are elastically fitted into the locking recesses 21 and 22, and the lock member 23 is moved to the position shown in FIG. When lowered as shown in FIG. 7, the locking piece 24 is fitted and locked in the locking groove 17, and the locking projections 28 and 29 are detached from the locking recesses 21 and 22 and are placed on the outer peripheral surface of the casing 2. It is designed to be locked.

  The first operation piece 25 and the second operation pieces 30 and 31 are formed by bending to one side as shown in the figure.

Next, a usage example of the nut 1 will be described with reference to FIG.
As shown in FIGS. 4 and 5, the lock member 23 is provided in the casing 2, and the lock member 23 is moved upward to release the lock piece 24 from the locking groove 17. Is inserted and installed in a bolt 40 which is a male screw body as shown in FIG. The nut 1 is inserted from the right end of the bolt 40 without the fixed end 41 in FIG. 8 by inserting the nut 1 from the insertion port 3 side and moving it to the left side (arrow A direction).

  During the movement in the A direction, the male screw 40a portion of the bolt 40 engages with the female screw 12 of each female locking member 10, and each female locking member 10 resists the urging force of the coil spring 16 to the rear side. Pushed to C. By this rearward movement, each female locking member 10 moves radially outward along the tapered surfaces 8 and 11, and the female screw hole formed by each of these female locking members 10 expands in diameter. . Therefore, the nut 1 advances while the female screw 12 of the female locking member 10 gets over the male screw 40 a of the bolt 40. Therefore, the nut 1 can be inserted without rotating.

  The bolt 40 is fixed to the fixed end 41, and a spring 42 as a biasing means is interposed between the fixed end 41 and the nut 1 by compression. Further, by arranging the first member 43 such as a workpiece on the front side of the nut 1, the nut 1 can be pressed against the first member 43 by the biasing force of the spring 42. In this way, the first member 43 can be pressed and held by the nut 1. When the nut 1 is stopped, each female locking member 10 is pushed forward by the coil spring 16, and the female screw 12 of each female locking member 10 meshes with the male screw 40 a of the bolt 40.

  When the second member 44 such as a workpiece different from the first member 43 is replaced and installed at a position away from the first member 43, for example, as shown in FIG. 8 pushes the first operating piece 25 of the lock member 23 in the direction of the arrow D in the nut 1 at the position of FIG. 8, moves the lock member 23 to the casing 2 side as shown in FIGS. The piece 24 is fitted into the locking groove 17 of the female locking member 10. With this insertion, the lock piece 24 engages with the locking portion 17a of the locking groove 17, and the backward movement of the female locking member 10 is prevented and locked. In this locked state in which the lock piece 24 is fitted into the locking groove 17, the locking protrusions 28 and 29 of the locking member 23 are elastically locked to the outer surface of the casing 2 as shown in FIG. 7. Held by.

  By inserting the lock piece 24 into the locking groove 17 of the female locking member 10 as described above, the movement of the female locking member 10 in the axial direction XX is prevented, and the female locking member 10 And the bolt 40 are kept engaged, and the nut 1 is prevented from moving in the axial direction without rotation. Therefore, in FIG. 8, even if the first member 43 is removed, the nut 1 does not move in the direction of arrow A, and the position is maintained.

  Then, after the second member 44 is arranged as shown in FIG. 8, the second operation pieces 30 and 31 of the lock member 23 are pushed in the direction opposite to the arrow D, and the lock member 23 is shown in FIGS. The lock piece 24 is removed from the locking groove 17 to release the locked state. With this release, the nut 1 can move in the direction of arrow A in FIG. 8, moves in the direction of arrow A by the biasing force of the spring 42, contacts the second member 44, and presses the second member 44. Hold.

By the above operation, the members 43 and 44 can be easily replaced while the nut 1 is temporarily stopped and held on the bolt 40.
Further, the nut 1 of the present invention is not only used for pressing and holding the members 43 and 44 as shown in FIG. 8, but can be used for various other uses. For example, the nut 1 can be stopped at a desired position of the bolt 40 by fitting the lock piece 24 into the locking groove 17 and maintaining the screwed state between the female locking member 10 and the bolt 40. Further, like a normal nut, the nut 1 can be rotated forward and backward to move back and forth.

The locking operation and the releasing operation of the locking member 23 may be performed manually, but may be performed automatically as shown in FIG.
For example, in FIG. 8, when the lock piece 24 of the lock member 23 is removed from the locking groove 17 after removing the first member 43, the nut 1 moves in the direction of arrow A by the biasing force of the spring 42. By providing a lock operation means comprising a lock operation member 46 having a tapered surface 45 that guides the first operation piece 25 of the lock member 23 in the direction of arrow D when the nut 1 abuts against the second member 44, The lock piece 24 automatically moves to the casing 2 side and is automatically locked. Note that the lock operation member 46 side may be moved to the nut 1 side with respect to the stopped nut 1 and may be moved relatively.

  Further, in order to release the locked state, as shown in FIG. 8, a lock release operation means including a lock release operation member 47 and a control means (not shown) for the member 47 are provided. By moving the release operation member 47 in the direction of arrow E and pushing the second operation pieces 30 and 31 of the lock member 23 in the direction of arrow E, the lock piece 24 of the lock member 23 can be detached from the locking groove 17. .

  In the above embodiment, the locking portion 17a for locking the locking piece 24 of the locking member 23 is formed by the locking groove 17, but the rear surface of the female locking member 10 or the rear surface of the spring receiver 13 is locked. It is good also as the part 17a.

9 to 11 show a second embodiment.
The second embodiment is a modification of the lock member and the lock holding means in the first embodiment.

  In the insertion hole 18 of the casing 2 in the first embodiment, a lock pin 51 as a lock member is provided so as to be able to advance and retreat, and is urged outward by a spring 52, and this is caused by the entry of the lock pin 51. The lock pin 51 is inserted into the locking groove 17 of the female locking member 10 and is removed from the locking groove 17 by retreating.

  The casing 2 is provided with an operation plate 53 constituting lock holding means. The operation plate 53 is formed of a plate material having elasticity, and has one end 54 fitted to the front side of the casing 2. A hook portion 55 is formed on the other end side of the operation plate 53 so that the hook portion 55 can be elastically fitted into a groove 56 formed on the rear side of the casing 2. Further, an engaging portion 57 that engages with the lock pin 51 is formed at an intermediate portion of the operation plate 53.

Since the other structure is the same as that of the first embodiment, the same parts as those described above are denoted by the same reference numerals and the description thereof is omitted.
In the second embodiment, as shown in FIG. 9, when the operation plate 53 is opened with its hook portion 55 removed from the groove 56 and centered on one end 54, the lock pin 51 is engaged with the locking groove by the biasing force of the spring 52. 17 is released and the lock of the female locking member 10 is released.

  As shown in FIG. 10, when the operation plate 53 is closed by fitting the hook portion 55 into the groove 56, the lock pin 51 is pressed by the engagement portion 57, and the lock pin 51 is moved to the locking groove 17. And the female locking member 10 is locked in the same manner as described above.

  Therefore, also in the second embodiment, the same operation and effect as in the first embodiment can be exhibited by operating the operation plate 53 and performing the lock operation by the lock pin 51 and the release operation thereof as described above.

  Further, as shown in FIG. 11, when the lock operation means 58 including the lock operation member 58 having the taper surface 58a is fixed at a predetermined position and the nut 1 is moved in the direction of the arrow A, the taper surface of the lock operation member 58 is obtained. 58a may press the operation plate 53. By such pressing, the lock pin 51 can be automatically pressed, and the female locking member 10 can be automatically locked.

  Furthermore, as shown in FIG. 11, by providing an unlocking operation means composed of an unlocking operation member 59 having a tapered surface 59a, and by advancing this in the direction of arrow F by a control means (not shown), the tapered surface 59a As shown in FIG. 11, the hook portion 55 of the closed operation plate 53 may be removed from the groove 56. By doing so, the operation plate 53 is opened as shown in FIG. 9 by the spring force, and the locked state of the lock pin 51 can be automatically released.

12 and 13 show a third embodiment.
The third embodiment is a modification of the operation plate 53 in the second embodiment.
A hook portion 62 is formed on the front side of the operation plate 61 constituting the lock holding means, and a hook portion 63 is formed on the rear side. When the operation plate 61 is advanced as shown in FIG. When the part 63 is elastically fitted into the groove 64 formed in the casing 2 and the operation plate 61 is retracted as shown in FIG. 13, the front hook part 62 is elastically fitted into the groove 65 formed in the casing 2. It comes to match.

  Further, an engaging portion 66 having a tapered surface is formed at an intermediate portion of the operation plate 61. When the operation plate 61 is advanced as shown in FIG. 12, the engaging portion 66 is not engaged with the lock pin 51. When the lock pin 51 is detached from the locking groove 17 and the operation plate 61 is moved backward as shown in FIG. 13, the engaging portion 66 presses the lock pin 51 to lock the lock pin 51. It fits in the groove 17.

Since other structures are the same as those of the first and second embodiments, the same parts as those described above are denoted by the same reference numerals and the description thereof is omitted.
Also in the third embodiment, the same operation and effect as in the first embodiment are exhibited by operating the operation plate 61 as described above to perform the lock operation by the lock pin 51 and the release operation thereof.

  Also in the third embodiment, by providing the lock operation member 58 and the lock release operation member 59 as shown in FIG. 11, the female locking member 10 can be automatically locked and released.

14 to 17 show a fourth embodiment.
The fourth embodiment is a modification of the operation plate 53 of the second embodiment.
The casing 2 is provided with an operation plate 71 made of an elastic plate with one end 72 fitted to the front side of the casing 2. Gate-shaped locking plates 73 and 74 are integrally formed on the other end side of the operation piece 71, and hook portions 75 and 76 are formed at the tip thereof. Further, fitting grooves 77 and 78 are formed in the axial direction on the outer surface of the casing 2.

  14 and 15, when the hook portions 75 and 76 of the operation plate 71 are elastically locked to the fitting grooves 77 and 78, the lock pin 51 is locked to the locking groove 17 as shown in FIG. 16 and 17, when the engaging portion 79 of the operation plate 71 is pressed, the locking plates 73 and 74 are displaced as shown in FIG. 76 is disengaged from the fitting grooves 77 and 78 and is locked to the outer surface of the casing 2, the pressed state at the engaging portion 79 is maintained, the engaging portion 79 presses the lock pin 51, and the lock pin 51 is It fits into the locking groove 17 of the mold locking member 10.

Since other structures are the same as those of the first and second embodiments, the same portions as those described above are denoted by the same reference numerals as those described above, and the description thereof is omitted.
Also in the fourth embodiment, the same operation and effect as in the first embodiment can be exhibited by operating the operation plate 71 and performing the lock operation by the lock pin 51 and the release operation thereof as described above. it can.

  Also in the fourth embodiment, by providing the lock operation member 58 and the lock release operation member 59 as shown in FIG. 11, the female locking member 10 can be automatically locked and released.

FIG. 18 shows a fifth embodiment.
The fifth embodiment is a modification of the locking means in the first embodiment.
The casing 2 is formed with a long hole 81 along the axial direction XX, the rear side of the long hole 81 is opened, and a stopper groove 82 that is bent in a circumferential direction from a predetermined position is formed on the front side. It is connected continuously. The predetermined position is a front position of the female locking member 10 in a state where the female locking member 10 is engaged with the male screw body (bolt) 40 as described above. In addition, the long hole 81a and the stopper groove | channel 82a similar to this long hole 81 and the stopper groove | channel 82 are formed point-symmetrically centering | focusing on the axial center of the casing 2, as shown in FIG.

  Further, the casing 2 includes a lock member 85 including an annular contact portion 83 that contacts the rear surface of the female locking member 10 and operation portions 84 and 84 a that project outward from the contact portion 83. Is provided. The contact portion 83 has an outer diameter that can be inserted into the casing 2 and can contact the rear surface of the female locking member 10, and has a hole 86 through which the bolt 40 can be inserted. The two operation portions 84 and 84a are formed 180 degrees apart from each other, and are formed so as to be slidably fitted in the long holes 81 and 81a and the stopper grooves 82 and 82a. These elongated holes 81, 81a, stopper grooves 82, 82a, and a lock member 85 constitute a locking means.

Since the lock member 85 also serves as the spring receiver 13 of the first embodiment, the spring receiver 13 is not provided.
Since the other structure is the same as that of the first embodiment, the same parts as those described above are denoted by the same reference numerals and the description thereof is omitted.

  In the fifth embodiment, when the operation parts 84 and 84a of the lock member 85 are positioned in the long holes 81 and 81a as shown in FIGS. The lock member 85 can move in the axial direction of the casing 2 along the long holes 81 and 81a. Therefore, the axial movement of the female locking member 10 is enabled, and the nut 1 can be inserted into the bolt 40 without rotation as described above.

  Further, in a state where the nut 1 is stopped at a desired position with respect to the bolt 40 and the female screw 12 of the female locking member 10 is engaged with the male screw 40a of the bolt 40, the lock member 85 is rotated to operate the operation portion. When 84 and 84a are fitted in the stopper grooves 82 and 82a, the lock member 85 is held so as not to move in the axial direction of the casing 2. Therefore, the movement in the diameter increasing direction due to the backward movement of the female locking member 10 is prevented, the meshing state of the nut 1 and the bolt 40 is maintained, and the same operation and effect as in the first embodiment are exhibited. can do.

  Also in the fifth embodiment, a lock operation member for rotating the operation portions 84 and 84a of the lock member 85 in the lock direction is provided by the advance of the nut 1, or the lock member 85 is reversely rotated from this locked state. An unlocking operation member for releasing the locked state may be provided so that the female locking member 10 is automatically locked and released.

In the above embodiment, the casing is formed in a cylindrical shape and the male screw body is a cylindrical bolt. However, the present invention is not limited to this shape, and the male screw body is formed in a flat plate shape and the casing is formed flat. The two female locking members may be arranged on both sides of the flat male screw body.
The number of the female locking members 10 may be one.

The perspective view of the state which decomposed | disassembled the components which show 1st Example of this invention. FIG. 2 is a longitudinal sectional view of a nut assembled with the components of FIG. 1, with the lock member removed. HH sectional view taken on the line of FIG. FIG. 3 is a cross-sectional view provided with a lock member in FIG. II sectional view taken on the line in FIG. Sectional drawing which shows the state which locked from the state of FIG. JJ sectional view taken on the line of FIG. The figure which shows the nut operating device of this invention. The figure which released the lock | rock in the longitudinal cross-sectional view which shows 2nd Example of this invention. Sectional drawing which shows the state which locked from the state of FIG. The perspective view which shows the operating device of the nut of 2nd Example of this invention. The figure which cancel | released the lock | rock in the longitudinal cross-sectional view which shows 3rd Example of this invention. Sectional drawing which shows the state which locked from the state of FIG. The figure which shows the state which cancelled | released the lock | rock in the side view of the nut which shows 4th Example of this invention. KK sectional drawing in FIG. The side view of the nut which shows the state which locked from the state of FIG. LL sectional view taken on the line in FIG. The perspective view of the state which decomposed | disassembled components which shows 5th Example of this invention. The longitudinal cross-sectional view of the nut which assembled | attached the components of FIG. The MM sectional view taken on the line of FIG. The longitudinal cross-sectional view which shows the conventional nut. The figure explaining use of the nut of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nut 2 Casing 5 Insertion hole 6 Tapered hole 8, 11 Tapered surface 10 Female type locking member 12 Female screw 16 Energizing means 17 Locking groove 17a Locking part 18 Insertion hole 23 Lock member 46, 58 Lock operation members 47, 59 Lock release operation member 51 Lock pins 53, 61, 71 Operation plate 81 as a lock holding means Elongate hole 82 Stopper groove 83 Annular contact portion 84 Operation portion 85 Lock member

Claims (7)

An insertion hole for inserting the male screw body is formed in the casing, and a part of the insertion hole is formed into a tapered hole whose diameter is increased on the rear side. The female locking member is provided so as to be movable, and the female locking member is urged forward. The female locking member meshes with the male screw body inserted by the forward movement, and is separated from the male screw body by the backward movement. In the nut
A nut provided with a lock means for locking to release or advance the lock of the female locking member.   The locking means is formed with a locking portion in the female locking member, and an insertion hole is formed in the casing where the locking portion is located in the advanced state of the female locking member, and locked through the insertion hole. The nut according to claim 1, wherein a member is configured to be engaged and locked with the locking portion, or to be released from the locking portion to be unlocked.   The nut according to claim 1, wherein the casing includes a lock holding unit that can hold or release the locked state of the lock member.   A stopper groove formed in the circumferential direction in the casing where the rear surface of the female locking member is positioned in the forward movement state of the female locking member, and a casing from the one end side of the stopper groove along the axial direction of the casing. An elongated contact hole formed in the casing, an annular contact portion that contacts the rear surface of the female locking member, and a fixed member fixed to the contact portion and projecting outward from the elongated hole. The nut according to claim 1, wherein the lock means comprises a lock member having a slidable operation portion.   An insertion hole for inserting the male screw body is formed in the casing, and a part of the insertion hole is formed into a tapered hole whose diameter is increased on the rear side. The female locking member is provided so as to be movable, and the female locking member is urged forward. The female locking member meshes with the male screw body inserted by the forward movement, and is separated from the male screw body by the backward movement. And a locking device for locking and releasing the locking member in the locking means, wherein the locking means for locking or releasing the locking is provided so as to hold the advancement position of the female locking member. An operation device for a nut, characterized in that operation means for automatically performing operation is provided.   For the locking operation of the locking member in the locking means, a locking operation member is provided on the advancing side of the nut, and the locking operation is performed by moving the locking member in the locking direction by the locking operation member by relative movement of the nut and the locking operation member. The nut operating device according to claim 5, wherein the nut is operated.   The operation of the nut according to claim 5 or 6, wherein a lock release operation member is provided outside the nut, and the lock release means is released by engaging the lock release operation member with the lock means in the locked state by the lock means. apparatus.

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