JP2009063070A - Split nut - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a split nut easy to be handled and managed by unifying each of structural parts and easy to be fitted and removed. <P>SOLUTION: Hinge parts 3 of each of split nut pieces 2A and 2B are turnably coupled to each other, and an engagement part 4 of the first split nut piece 2A is formed with a pin slide hole 41 passing through in the axial direction, and a lock pin 6 longer than the length of the pin slide hole 41 is slidably supported by the pin slide hole 41, and an engagement part 4 of the second split nut piece 2B is formed with a pin fitting hole 42 communicated with the pin slide hole 41 so that a tip of the lock pin 6 can be fitted when overlapping with the first split nut piece 2A in the axial direction for engagement. The lock pin 6 is supported, projecting from the bottom surface of the first split nut piece 2A, and when the lock pin 6 is pushed from the bottom surface side, the lock pin 6 is slid toward the second split nut piece 2B, and a tip thereof is fitted in the pin fitting hole 42. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a split nut comprising a pair of split nut pieces, and particularly to a split nut that is easy to attach and detach and is suitable for repeated use.

  2. Description of the Related Art Conventionally, a split nut has been proposed for attaching to a suspension bolt or the like that is long in the axial direction from a midway position and quickly fastening it. For example, the split nut described in Japanese Utility Model Laid-Open No. 2-117416 is connected to each other so as to be angularly displaceable by inserting a hinge pin into an insertion hole formed in each end portion of a plurality of divided nut portions. The end is configured to be locked by inserting a lock pin through the through hole.

  Further, in the split nut described in Japanese Patent Application Laid-Open No. 2007-162790, a plurality of split nut pieces are connected by a hinge portion provided at each one end portion, and one of the other end portions has an arrowhead-like engagement. An engaging claw portion is provided, and an engaging portion for engaging the engaging claw portion is provided on the other end of the other end portion (Patent Document 2).

Japanese Utility Model Publication No. 2-117416 JP 2007-162790 A

  However, when the split nut described in Patent Document 1 is attached to a bolt or the like, fine manual work is required in which each through hole is aligned in a communicating state and a lock pin is inserted through the small through hole. Further, when removing, the fine lock pin must be manually removed from the through-hole, and there is a problem that it takes time to attach and detach, and it is very troublesome to use repeatedly. Furthermore, since the lock pin is configured as a separate part, there is a problem that it is easily lost and inventory management is troublesome.

  On the other hand, according to the split nut described in Patent Document 2, the above-described troublesomeness at the time of attachment work and problems due to separate parts are solved. However, since the engaging claw portion is engaged in a state of being accommodated inside the split nut piece, there is a problem that the fingertip and the tool do not reach, and it is extremely difficult to release the engagement state and remove it. .

  The present invention has been made in order to solve such problems, and is a split nut in which each component is integrated to facilitate handling and management, and can be easily installed and removed. The purpose is to provide.

  A feature of the split nut according to the present invention is a split nut comprising a pair of split nut pieces each having a thin hinge portion at one end portion and a thin engagement portion at the other end portion. The hinge portion of the nut piece is overlapped in the axial direction and is rotatably connected. A pin sliding hole penetrating in the axial direction is formed in the engaging portion of one of the first divided nut pieces. A lock pin that is longer than the length of the pin sliding hole is slidably supported in the moving hole, and the engaging portion of the other second divided nut piece is overlapped with the first divided nut piece in the axial direction. A pin insertion hole communicating with the pin sliding hole is formed so that the tip of the lock pin can be inserted when the lock pin is inserted, and the lock pin is supported in a protruding state from the bottom surface of the first split nut piece. At the same time, when pressed from the bottom side, Slide to one side, there its tip that is fitted into the pin insertion hole.

  Further, in the present invention, the lock pin is formed with a pin enlarged portion at a position shorter than the length of the pin sliding hole from the tip thereof, and the pin expanding hole has the pin expanding portion. A diameter-enlarged portion is formed so that the diameter portion can be accommodated therein, and the pin diameter-enlarged portion is accommodated in the diameter-enlarged portion, and the lock pin protrudes from the bottom surface of the first split nut piece. It is preferable that the urging member for urging is accommodated.

  According to the present invention, each component is integrated, and handling and management are easy, and attachment work and removal work can be easily performed.

  Hereinafter, embodiments of a split nut 1 according to the present invention will be described with reference to the drawings. 1 and 2 are a perspective view and a plan view showing the split nut 1 of the present embodiment, and FIG. 3 is a cross-sectional view taken along line 3A-3A in FIG.

  As shown in FIG. 1 and FIG. 2, the split nut 1 of this embodiment includes a pair of split nut pieces 2A and 2B composed of a first split nut piece 2A and a second split nut piece 2B, which are connected by a hinge mechanism. It is comprised so that it can mutually rotate.

  Hereinafter, each component will be described in more detail.

  As shown in FIG. 1, each split nut piece 2A, 2B constituting the split nut 1 of the present embodiment is formed in a shape in which a hexagon nut is substantially halved along the axial direction. Each split nut piece 2A, 2B is provided with a thin-walled hinge portion 3 at one end and a thin-walled engaging portion 4 at the other end. Moreover, the internal thread part 5 is formed in the inner surface of each division | segmentation nut piece 2A, 2B.

  In this embodiment, the hinge part 3 and the engaging part 4 are formed in the thickness of about half with respect to the thickness of each division | segmentation nut piece 2A, 2B. Further, the hinge portion 3 and the engaging portion 4 of the first split nut piece 2A are disposed on one and the other of the upper half side and the lower half side in the axial direction, respectively. On the other hand, the hinge portion 3 and the engaging portion 4 of the second split nut piece 2B are arranged so that the positional relationship in the axial direction is opposite to that of the first split nut piece 2A. In addition, the arrangement | positioning relationship of the hinge part 3 and the engaging part 4 is not restricted to this structure, You may arrange | position both on the same side in an axial direction. Further, the shape of each of the divided nut pieces 2A and 2B is not limited to the hexagonal nut shape, but may be formed in a rectangular shape or other polygonal shape, and the dividing position is not limited to a substantially half position.

  The hinge portion 3 is for connecting the divided nut pieces 2A and 2B by a hinge mechanism. In the present embodiment, each hinge portion 3 is formed with a hinge hole 31 penetrating in the axial direction. As shown in FIGS. 1 and 3, the hinge portions 3 are overlapped in the axial direction so that the hinge holes 31 communicate with each other, and the hinge pins 32 are inserted and held in the hinge holes 31. 2B is rotatably connected.

  In the present embodiment, as shown in FIG. 3, a circular convex portion 33 and a circular concave portion 34 that are fitted to each other are provided on one and the other of the mutually facing surfaces of each hinge portion 3. Thereby, although it is a structure which can be rotated freely, the shearing force which acts on the hinge pin 32 is reduced, and distortion of a rotating shaft is prevented.

  In the present embodiment, as shown in FIG. 3, pin locking portions 35 having a diameter larger than that of the hinge hole 31 are provided at the upper end portion and the lower end portion of the connected hinge hole 31. On the other hand, a locking stopper 36 that fits into the pin locking portion 35 is provided at one end of the hinge pin 32, and a crimping hole 37 is formed at the other end. Therefore, the locking pin 36 is locked by the one pin locking portion 35 and the caulking hole 37 is caulked by the other pin locking portion 35, thereby preventing the hinge pin 32 from falling off. In addition, the connection structure of the hinge part 3 is not restricted to this, If it can connect rotatably, it can change suitably.

  The engaging part 4 is for engaging the open ends of the split nut pieces 2A and 2B. In the present embodiment, as shown in FIGS. 3 and 4, a pin sliding hole 41 penetrating in the axial direction is formed in the engaging portion 4 of the first split nut piece 2A on the lower side. And the lock pin 6 for locking each engaging part 4 is supported by this pin sliding hole 41 so that sliding is possible. On the other hand, the engaging portion 4 of the second divided nut piece 2B on the upper side can be fitted with the tip end portion of the lock pin 6 when engaged with the engaging portion 4 of the first divided nut piece 2A. A pin insertion hole 42 communicating with the pin sliding hole 41 is formed.

  Specifically, the shape of the lock pin 6 is not limited, but in the present embodiment, the lock pin 6 is formed in a substantially cylindrical shape, and the length in the axial direction is the length of the pin sliding hole 41 (the thickness of the engaging portion 4). ) Is formed longer. As shown in FIGS. 3 and 4, the lock pin 6 has a pin enlarged portion 61 at a position shorter than the length in the axial direction of the pin sliding hole 41 from the tip portion. In the present embodiment, the pin enlarged diameter portion 61 is formed in a flange shape, but is not limited to this, and it is sufficient that there is at least a portion protruding in the radial direction.

  On the other hand, the pin sliding hole 41 has a hole enlarged portion 43 that is enlarged so that the pin enlarged portion 61 can be accommodated therein, and a pin enlarged portion is provided at the lower end of the hole enlarged portion 43. A pin abutting portion 44 that abuts 61 is formed. Therefore, when the pin enlarged portion 61 is accommodated in the hole enlarged portion 43, the lock pin 6 is slidably provided within the movement range of the axial length of the hole enlarged portion 43.

  In the present embodiment, a biasing member 7 made of a compression spring is provided in the pin sliding hole 41 between the upper end surface of the hole enlarged portion 43 and the pin enlarged portion 61 of the lock pin 6 accommodated therein. Is provided. The biasing member 7 biases the pin enlarged portion 61 downward, and the lock pin 6 protrudes from the bottom surface of the first split nut piece 2A (the lower end of the pin sliding hole 41) with an appropriate biasing force. It will be energized.

  Therefore, as shown in FIG. 4A, the lock pin 6 normally has a pin enlarged portion 61 urged by the urging member 7 in contact with the pin contact portion 44, and a lower end portion thereof is It protrudes from the bottom surface of the first split nut piece 2A. At this time, the tip of the lock pin 6 is formed to a length that does not fit into the pin insertion hole 42. On the other hand, when a pressing force is applied to the lower end surface of the lock pin 6 from the bottom surface side of the first split nut piece 2A, as shown in FIG. The portion is inserted into the pin insertion hole 42 to maintain the locked state.

  Next, the operation of the split nut 1 of the present embodiment having the above-described configuration will be described with reference to FIG.

  First, when the fixed object X is fixed to the bolt B by the split nut 1 of the present embodiment, as shown in FIG. 5A, the split nut pieces 2A and 2B are opened and the engaging portion 4 is opened. Then, the female screw portion 5 is brought into contact with the bolt B. Thereby, no matter how long the bolt B is, the split nut 1 can be easily and quickly set at a desired screwing position.

  Next, as shown in FIG. 5B, the divided nut pieces 2A and 2B are rotated so that the engaging portions 4 and 4 are overlapped in the axial direction, and the female screw portion 5 is screwed to the bolt B. . At this time, the urging member 7 urges the lock pin 6 to protrude from the bottom surface of the first split nut piece 2A, as shown in FIG. For this reason, the engaging portion 4 of the second divided nut piece 2B is superimposed on the engaging portion 4 of the first divided nut piece 2A without colliding with the lock pin 6, and the pin insertion hole 42, the pin sliding hole 41, and the like. Communicate. Further, even when the split nut 1 is used with the vertical direction reversed, the lock pin 6 does not slide to the pin insertion hole 42 side due to its own weight, and the engaging portion 4 is reliably overlapped.

  Thereafter, as shown in FIG. 5C, the split nut 1 is rotated in the tightening direction using a rotary tool such as a spanner. Accordingly, the split nut 1 is screwed toward the fixed object X, and the lower end portion of the lock pin 6 comes into contact with the fixed object X. Therefore, as shown in FIG. 4B, the lock pin 6 receives a pressing force from the fixed object X and slides toward the second divided nut piece 2B against the urging force of the urging member 7. As a result, the lock pin 6 is inserted into the pin insertion hole 42 at a tip end portion thereof so that the engagement portions 4 cannot be opened, and the divided nut pieces 2A and 2B are prevented from rotating with respect to each other. As long as the split nut 1 is in the fastened state, a pressing force is continuously applied to the lock pin 6, so that the locked state is also maintained.

  On the other hand, when removing the fastened split nut 1, the split nut 1 is rotated in the direction of loosening using a rotary tool such as a spanner. Thereby, since the split nut 1 is screwed away from the fixed object X, the lower end portion of the lock pin 6 is separated from the fixed object X and the pressing force disappears. For this reason, the lock pin 6 is slid downward by the urging member 7, and its tip is pulled out from the pin insertion hole 42. As a result, the split nut 1 is released from the locked state. Therefore, the split nut 1 can be easily detached from the bolt B simply by rotating the split nut pieces 2A and 2B.

According to this embodiment as described above,
1. By simply tightening the split nut 1, the split nut pieces 2A and 2B can be automatically locked and attached.
2. By simply loosening the split nut 1, the locked state can be automatically released and removed.
3. Without damaging the split nut 1, it can be easily and quickly attached and detached, and can be used repeatedly.
4). By integrating each component, the ease of handling and management can be improved, and the loss of parts can be prevented.
5). It can be applied to molds and jigs that are tightened with bolts and nuts, and has the effect of facilitating and speeding up the detachment work.

  In addition, the split nut 1 which concerns on this invention is not limited to embodiment mentioned above, It can change suitably.

  For example, in the present embodiment described above, the lock pin 6 is urged by the urging member 7, but the configuration is not limited to this, and if the bottom surface of the split nut 1 is used downward, The urging member 7 may not be provided. In this case, the lock pin 6 protrudes from the bottom surface of the split nut 1 by its own weight. Therefore, if the split nut 1 is tightened, the locked state is held by the pressing force from the fixed object X. If the split nut 1 is loosened, it slides due to its own weight and protrudes from the bottom surface of the split nut 1 again.

  Moreover, in this embodiment mentioned above, although the movement range of the lock pin 6 is controlled by the hole enlarged diameter part 43 and the pin enlarged diameter part 61, it is not restricted to this structure. For example, a slide groove may be formed on the inner peripheral surface of the pin sliding hole 41 along the axial direction, and a slide protrusion that fits into the slide groove may be provided on the lock pin 6.

It is a perspective view showing an embodiment of a split nut concerning the present invention. It is a top view which shows the division | segmentation nut of this embodiment. It is the 3A-3A sectional view taken on the line of FIG. It is sectional drawing when the lock pin of this embodiment is in the state which exists in (a) lowest end position, and (b) lock state. It is explanatory drawing which shows the usage method of the split nut of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Split nut 2A 1st split nut piece 2B 2nd split nut piece 3 Hinge part 4 Engagement part 5 Female thread part 6 Lock pin 7 Energizing member 31 Hinge hole 32 Hinge pin 33 Circular convex part 34 Circular recessed part 35 Pin latching part 36 Locking stopper 37 Caulking hole 41 Pin sliding hole 42 Pin insertion hole 43 Hole enlarged portion 44 Pin contact portion 61 Pin enlarged portion B Bolt X Fixed object

Claims (2)

A split nut comprising a pair of split nut pieces each formed with a thin-walled hinge portion at one end and a thin-walled engaging portion at the other end,
The hinge part of each divided nut piece is connected to be pivotable by overlapping in the axial direction,
A pin sliding hole penetrating in the axial direction is formed in the engaging portion of one of the first divided nut pieces, and a lock pin longer than the length of the pin sliding hole can be slid into the pin sliding hole. To support,
The engaging portion of the other second split nut piece communicates with the pin sliding hole so that the tip end portion of the lock pin can be fitted when engaged with the first split nut piece in the axial direction. Forming a pin insertion hole,
The lock pin is supported in a projecting state from the bottom surface of the first split nut piece, and slides toward the second split nut piece side when pressed from the bottom surface side, and its tip is inserted into the pin insertion hole. A split nut characterized in that In claim 1, the lock pin is formed with a pin enlarged diameter portion at a position shorter than the length of the pin sliding hole from the tip.
The pin sliding hole is formed with a hole expanding portion which is expanded so that the pin expanding portion can be accommodated therein, and the pin expanding portion is accommodated in the hole expanding portion, and the lock pin A split nut comprising: a biasing member that biases the first split nut piece in a protruding state from the bottom surface.

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