JPH075291Y2 - nut - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a nut that is easy to operate.

(Prior Art) The applicant of the present invention has proposed a nut that can be quickly moved to a desired position without rotating the nut with respect to a threaded rod (Japanese Utility Model Laid-Open No. 62-128218). Further, in order to widen the range of use of the above-mentioned nut, the applicant of the present invention should configure the nut with two members so that the nut can be temporarily temporarily fixed in the middle of the threaded rod or the nut can be downsized. Proposed.

The nut includes a first nut portion that is one of the nut members and a second nut portion that is the other of the nut members.
The nut portion is provided with a connecting portion, and the connecting portion is screwed into a connecting hole provided in the second nut portion. The first nut portion and the second nut portion respectively pass through the mounting holes, and each mounting hole is a hole in which a screw hole and a slide hole are combined, and the center of the screw hole and the center of the slide hole are displaced from each other. It is formed leaving the threaded portion, and the centers of both screw holes are aligned. As a means for restricting the rotation of the first nut portion or the second nut portion, a restriction pin that can be moved forward and backward from the outside of the nut and a stopper are provided. For example, the restriction pin on one of the first nut portions,
A stopper is provided on the second nut part on the other side, and the stopper is placed on the rotation locus of the restriction pin to prevent the nut parts from separating, and to fix and slide the nut by simply turning one nut part halfway. It is possible to switch between and.

(Problems to be solved by the invention) The latter two-member nut has a structure in which the nut portion is once set to a position where it meshes with the screw rod and then tightened.
If you try to operate with only one hand and turn the second nut part of the nut part on the advancing direction side of the nut with a wrench, the coupling force between the nut parts is only meshing resistance, so both nut parts gradually separate. As a result, both nuts could not move together and the nut function was sometimes impaired. If the two nuts are strongly contacted, the nut will be unfastened in the future,
Even if you try to move the nut freely with respect to the threaded rod,
Since the two nut parts are in strong contact with each other, it may be necessary to separate the nut parts with a spanner. Therefore, there is room for improvement in order to facilitate the operation of the nut.

The object of the present invention is that when tightening a nut, both nuts can rotate together as a unit, without turning away from the other nut even if the nut on the advancing direction side is rotated, When the nut is loosened, both nuts do not rotate as a unit and the engagement with the threaded rod can be released to facilitate the operation of the nut.

(Means for Solving the Problem) A nut according to the present invention includes a first nut portion and a second nut portion. The first nut portion is provided with a coupling portion formed with a threaded portion on the outer circumference, and the second nut portion is provided with a coupling hole in the axial direction of the coupling portion, into which the coupling portion is screwed. Each of the first nut portion and the second nut portion has a mounting hole formed by combining a screw hole and a slide hole. A pressing / combining regulating means is provided for regulating the rotation of the first nut portion or the second nut portion and for frictionally engaging the first nut portion and the second nut portion. Each of the mounting holes is formed by shifting the center of the screw hole and the center of the slide hole and leaving the threaded portion, and the centers of both the screw holes coincide with each other. The pressing / combining regulating means comprises a regulating body and a spring body provided on one of the first nut portion and the second nut portion, and a control portion provided on the other. The spring body applies a spring force to the screw coupling portion of the first nut portion and the second nut portion via the regulation body, and the control unit sets the movement range of the regulation body to the first nut portion and the first nut portion. (2) The nut is controlled so that it does not come off and does not come into pressure contact with the opposing surface.

(Operation) Even if the first nut portion and the second nut portion are not in close contact with each other on the opposing surfaces, the pressing action of the restricting body causes the first nut portion and the second nut portion to frictionally mesh with each other at the screw coupling portion. Even if one nut portion on the moving direction side of the nut is rotated, the other nut portion follows this. Since the first nut portion and the second nut portion are not in close contact with each other on the opposing surfaces, each nut portion is easily rotated, and the engagement of the nut portion with the threaded rod is smoothly released.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the nut 1 includes a first nut portion 2 of one nut member and a second nut portion 2 of the other nut member.
It comprises a nut portion 3 and a pressing / combining regulating means 4.

The first nut portion 2 will be described.

The first nut portion is formed in a T-shaped cross section as shown in FIGS. 1 to 4, the small diameter portion is a joint portion 21, and a screw portion 22 is formed on the outer periphery of the joint portion. A mounting hole 5 is penetrated through the first nut 2 in the thickness direction. The mounting hole 5 is a combination of a screw hole 51 into which the screw rod S (Fig. 7) can be screwed, and a slide hole 52 for allowing the first nut portion 2 to freely move with respect to the screw rod. The center of the screw hole 51 and the center of the slide hole 52 are displaced from each other, and the screw portion 6 is formed in a part of the screw hole. The center of the screw hole 51 coincides with the center of the first nut portion 2. The diameter of the screw hole 51 is the slide hole 52.
It is set shorter than the diameter of. A knurl is formed on the outer circumference of the flange of the first nut portion 2.

The second nut portion 3 will be described.

The second nut portion 3 is formed to have a U-shaped cross section as shown in FIGS. 1, 2, and 5, and a coupling hole 31 is cut from the inner end surface (upper end surface in FIG. 1) 33 in the central portion. A screw portion 32 is formed on the inner circumference of this coupling hole. In the coupling hole 31, the coupling portion 21 of the first nut portion 2 meshes with the screw portion 32 and the screw portion 22.

A mounting hole 7 having substantially the same structure as the mounting hole 5 of the first nut portion 2 is penetrated through the second nut 3 in the thickness direction.
Screw hole 71 of second nut 3, screw portion 8 and slide hole 72
Correspond to the screw hole 51, the screw portion 6 and the slide hole 52 of the first nut portion 2, respectively. The center of the screw hole 71 of the mounting hole 7 and the center of the screw hole 51 of the mounting hole 5 of the first nut portion 2 coincide with each other.

It is desirable to make the number of threads of the threaded portion 8 match that of the threaded portion 6 as shown in FIG. In order to make them coincide with each other, a notch 53 is provided on the lower surface of the first nut portion along the mounting hole 5 when processing the first nut portion. If the threads are matched, the first nut portion 2 and the second nut portion 3 can be rotated with respect to the screw rod S without being affected by the operation of the other, and the nut can be operated with one hand. This is because tightening becomes possible. This is because if, for example, the number of threads of the threaded portion 6 of the first nut portion 2 is large, the second nut portion 3 will also be driven to rotate if the first nut portion is turned to tighten it. Therefore, the second nut portion 3 must be fixed with the other hand for that purpose.

Here, the mounting hole 5 of the first nut portion 2 and the second nut portion 3
The relationship with the mounting hole 7 will be described.

As shown in FIGS. 1 and 2, when the screw portion 6 of the screw hole 51 of the first nut portion 2 and the screw portion 8 of the screw hole 71 of the second nut portion 3 are located opposite to each other, The inside of the mounting holes 5 and 7 of both nut portions can be screwed to the screw rod S.

Further, as shown in FIG. 7, the screw portion 6 of the screw hole 51 and the screw hole
When the screw portion 8 of 71 is in a vertically continuous positional relationship, the mounting holes 5 and 7 of both nut portions 2 and 3 are larger than the diameter of the screw rod S over the entire length, There is a gap,
The nut 1 becomes movable with respect to the threaded rod.

Further, the pressing / combining restricting means 4 will be described.

On the lower surface of the connecting portion 21 of the first nut portion 2, there is provided a semicircular control groove 9 along the mounting hole 5 as shown in FIGS. 1, 2, and 4. Both ends of the control groove 9 are control surfaces 9
It is 1,92.

A restricting body 10 is provided on the bottom of the coupling hole 31 of the second nut portion 3 so as to project. The lower portion of the restricting body 10 is inserted into the hole 34 formed in the second nut portion 3, and the spring force is biased upward by the spring body 11 of the coil spring housed in the hole. For this reason, the restricting body 10 abuts the lower portion of the first nut portion 2 and applies a spring force to the screw portion 22 of the first nut portion and the screw portion 32 of the second nut portion 3 to frictionally I try to mesh with each other.

As shown in FIG. 6, the regulating body 10 is movable in the control groove 9, and the movement range is regulated by the control surfaces 91, 92 of the control groove. This movement range by the control groove 9 enables the rotation of the first nut portion 2 within a range of about 180 degrees, and the flange portion of the first nut portion 2 is the inner end surface of the second nut portion 3.
It is set so that there is a slight gap without touching 33.

In this way, the regulator 10 has the following two functions.
One of them is that when the nut portions 2 and 3 are frictionally engaged with each other by a pressing action, for example, when the second nut portion 3 is tightened,
The first nut part can follow the second nut part,
This is a function of preventing the first nut portion from loosening. The second function is to rotate the rotation range of the first nut portion 2 or the second nut portion 3 by about 180 degrees from the position shown in the first position when the one of the first nut part 2 and the second nut part 3 is rotated. This is a function to prevent the nuts from uncoupling or coming into contact with each other on the opposing surfaces by rotating the nuts further than this to restrict the engagement of the nuts.

Next, the usage method will be described.

First, the operation of moving the nut 1, that is, the case where the nut 1 is freely moved to the threaded rod S without rotating will be described.

Make sure that the upper and lower mounting holes 5 and 7 are aligned.
By rotating the nut portion 2, as shown in FIG. 7, both mounting holes are opened over the entire length, and the screw rod S is passed through the mounting holes,
The nut 1 is moved to bring the screw rod into contact with the inner peripheral surfaces of the slide holes 52 and 72, and then the nut is moved up and down.
Then, the nut 1 is applied to the back surface of a fixed member such as a form (not shown) attached to the screw rod S.

Next, a nut tightening operation, that is, a case of pressing the back surface of the mold with the nut to fix it will be described.

First, move the nut 1 from the position shown in FIG. 7 to the right,
The screw portions 6 and 8 are brought into contact with the screw rod S.

Next, when one of the first nut portion 2 and the second nut portion 3, for example, the first nut portion 2 is rotated clockwise and is half-turned from the position shown in FIG. Since the control surface 92 moves in the restriction groove and comes into contact with the control surface 91 on the other end side, the rotation is blocked. At this time,
The lower surface of the flange portion of the first nut portion 2 does not abut the inner end surface 33 of the second nut portion 3 and has a slight gap.
At this stage, the screw parts 6 and 8 are opposed to each other, and the screw part and the screw rod S are set to the meshing position.

Therefore, for example, if the second nut portion 3 is rotated with the second nut portion 3 by, for example, clockwise while holding the wrench with one hand, the nut portions 2 and 3 are engaged with each other by a predetermined frictional force due to the pressing force of the regulating body 10. Therefore, the first nut portion 2 follows the rotation of the second nut portion, tightens the second nut portion 3 at a predetermined position, and fixes the mold from the back surface.

To release the nut 1, when the second nut portion 3 is reversed with a spanner, the first nut portion 2 is not in contact with the inner end surface 33 of the second nut portion, so that the two nut portions are easily separated from each other,
The setting of the meshing position with the screw rod S is released, and for this purpose, the nut 1 is slidably moved.

Although the control unit is composed of the control groove 9 in the above example, the protrusion is provided at a position where it comes into contact with the control surfaces 91 and 92, instead of the control groove.
The regulation body 10 may abut. Alternatively, the hole 34 may be a through hole so that the spring body can be replaced. In this case, a screw plug is attached to the lower end opening of the hole.

(Effect of the Invention) According to this invention, since the rotation pressing / combining restricting means is provided, when the nut is tightened, even if the nut portion on the traveling direction side of the nut is rotated, the nut portion on the other side is separated. Without
It is possible to follow, both nut parts rotate integrally, which allows one-handed operation of the nut, smooth tightening operation, and when loosening the nut, both nut parts are easy to separate, It will be easier to release the nut. Further, since the nut includes the first nut portion and the second nut portion having the mounting holes, the nut can be freely moved with respect to the threaded rod and fixed even in the middle of the threaded rod, and the nut can be made small. You can

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state in which a nut can be coupled with a threaded rod, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a cross-sectional view of a first nut portion, and FIG. 1 Bottom view of the nut part, FIG. 5 is a cross-sectional view of the second nut part, FIG. 6 is an explanatory view showing the relationship between the restricting body and the control groove, and FIG. 7 is a nut movable with respect to the screw rod. FIG. 4 is a plan view showing a state in which there is a position. DESCRIPTION OF SYMBOLS 1 ... Nut, 2 ... 1st nut part, 21 ... Coupling part, 22 ... Screw part, 3 ... 2nd nut part, 31 ... Coupling hole, 32 ... Screw part, 33 ...
Inner end surface, 4 ... Pressing and restricting means, 5, 7 ... Mounting hole, 51, 71
... Screw hole, 52,72 ... Slide hole, 6,8 ... Screw portion, 9 ... Control groove, 10 ... Regulator, 91,92 ... Control surface, 11 ... Spring body, S ... Screw rod.

Claims (1)

[Scope of utility model registration request] 1. A first nut portion and a second nut portion are provided, and a coupling portion having a threaded portion is formed on an outer circumference of the first nut portion, and a shaft center of the second nut portion. Direction, there is provided a coupling hole through which the coupling portion is screwed, and the first nut portion and the second nut portion respectively penetrate through mounting holes that are a combination of a screw hole and a slide hole. And a second nut portion are restricted from rotating, and pressing and regulating means for frictionally meshing the first nut portion and the second nut portion with each other are provided. The center of the slide hole is displaced from the center of the slide hole to leave the threaded portion, and the centers of the both screw holes are aligned with each other. The pressing / combining restricting means is one of the first nut portion and the second nut portion. On one side and the spring on the other side. And the spring body applies a spring force to the screw coupling portion of the first nut portion and the second nut portion via the regulation body, and the control unit sets the movement range of the regulation body to the first range. A nut characterized in that the nut portion and the second nut portion are controlled so that they do not separate from each other and do not come into pressure contact with the facing surface.