WO2006123844A1

WO2006123844A1 - Intermediate insertion type nut

Info

Publication number: WO2006123844A1
Application number: PCT/JP2006/310595
Authority: WO
Inventors: Atushi Ota
Original assignee: Atushi Ota
Priority date: 2005-05-20
Filing date: 2006-05-17
Publication date: 2006-11-23

Abstract

An intermediate insertion type nut, wherein the side face of a general nut is cut off to form it in a roughly C-shape, and its cut-off portion is used as a bolt insertion passage. A serrated groove is formed in the insertion passage so that the threads of a bolt can be laterally moved in the insertion passage. Also, a step is formed in a boundary between the insertion passage formed of the serrated groove and the female threads of the nut to prevent the bolt from coming off the nut.

Description

Intermediate insertion nut

Technical field

The present invention relates to a nut that is inserted into the middle of a bolt to be screwed. Light

Background art

Conventionally, it does not rely on elastic deformation, and it becomes an intermediate insertion nut でも with one part.

In some cases, a pair of semi-circular threaded portions facing the bolt shaft are provided at positions that are staggered apart from each other by the bolt diameter. However, the thickness of the nut was structurally about three times as large as a general nut. The nut seat was also large (Publication No. 1 1 0 8 4 0 7 PR).

Disclosure of the invention

Therefore, a compact 卜 that does not rely on elastic deformation and that serves as an intermediate insertion nut with a single component is provided.

Describe the basic means. First, the side of a general nut is cut out to form a substantially C shape, and the cutout is used as a bolt insertion path. In the insertion path, a saw-shaped groove shall be provided so that the bolt will not be removed during insertion and the thread of the bolt can be moved in parallel.

The following are the problems when the basic measures are taken. At that time, the boundary between the saw-shaped groove and the nut thread is hardly changed and is almost continuous. Even if the tightening operation is performed in this state, the screw at the end of the insertion direction and the screw thread of the bolt will be pushed out of each other by tightening and will be displaced from the nut's spiral axis. As a result, the threading at the end of the insertion direction does not function and the load resistance decreases. Also, the nut 卜 may come off during temporary tightening, during tightening, or when loosened slightly after tightening. Further solutions are described below. Therefore, it is more difficult to insert during the insertion than during screwing. The saw-shaped groove is inclined so that the distance from the fixed object is close. In that case, in order for the nut 卜 to come off after completion of tightening, it must be further in close contact with the fixed body ^ and the structure will not come off.

In addition, it can be solved by twisting the insertion path to change the posture when tightening is completed and the posture during insertion, or by placing a saw-shaped groove in an arc. In that case, in order for the nut to come off after completion of tightening, the nut seating surface that is in close contact with the object to be fixed must be tilted so that it is closer to the object to be fixed, but it is already in close contact with the object to be fixed. Therefore, the structure does not go wrong.

Even when the two solutions described above are taken, the boundary between the saw-shaped groove and the thread of the intermediate insertion nut is unstable and unstable. In addition, the following measures are taken to stabilize the nuts. The nut should be provided with a thread that has a shape that can be slid within one pitch with respect to the bolt crest. In other words, a step or slope or protrusion is provided at the boundary between the groove surface of the insertion path and the threaded surface of the nut so that the groove surface side of the insertion path becomes higher. In other words, a step, slope, or protrusion is provided at the boundary between the groove of the insertion path and the thread of the nut so that the groove side of the insertion path becomes thicker. When tightening is performed, the screw at the end of the nut in the bolt insertion direction and the screw thread of the bolt try to push out each other by tightening. Does not come off.

As an application of the solution, if the intermediate insertion nut described in claims 1 to 4 has no directionality, an intermediate insertion length nut can be obtained by adding the shape of the nut to the bolt axis direction. Function. Alternatively, in the intermediate insertion nuts according to claims 1 to 4, if there is directionality, the intermediate insertion length can be increased by adding the bolts in the direction opposite to each other and taking into account the stable direction. It functions as a nut.

In addition, as an applied product as a connection device involving screwing, a structure in which the intermediate insertion nut according to claims 1 to 4 is provided on the main body side of the article and the bolt side is an attachment member is also conceivable. For example, kotatsu and kotatsu feet, utility poles and scaffolding bolts. Alternatively, a structure in which one of the seating surfaces of the intermediate insertion nut is closed is conceivable. For example, cap nuts, bottle lids, etc. Brief Description of Drawings

Fig. 1 is a perspective view of an intermediate insertion nut in which a side face of a general nut is cut out into a substantially C shape and a saw-shaped groove is provided in the bolt insertion path.

Fig. 2 is a perspective view of an intermediate insertion nut in which a side surface of a general nut is cut out into a substantially C shape and a saw-shaped groove is provided in a part of the bolt insertion path.

Fig. 3 is a plan view of the seating surface side of an intermediate insertion nut with a saw-shaped groove formed in a part of the bolt insertion path, with the side face of a general nut cut out to form an approximate C shape.

FIG. 4 is a plan view of the seat surface side of an intermediate insertion nut 備え provided with a screw thread at a part of the bolt threaded portion. Fig. 5 is a simplified illustration of an intermediate insertion nut with a sawtooth-shaped groove inclined so that the distance from the object to be fixed is closer during insertion than during screwing.

Fig. 6 is a plan view showing the locus of an intermediate insertion nut ナ with a saw-shaped groove arranged in an arc.

Fig. 7 is a perspective view of an intermediate insertion nut in which the insertion path is twisted about the bolt insertion direction. Fig. 8 is a perspective view of an intermediate insertion nut in which the insertion path is twisted about the bolt insertion direction and a saw-shaped groove is twisted about the bolt insertion direction.

Fig. 9 is a perspective view of one mountain when the nut is cut off so that it can slide up and down with respect to the bolt mountain.

Fig. 10 is a simplified view of a mountain when a nut is cut off so that it can slide up and down.

Fig. 11 is a simplified diagram of an intermediate insertion nut provided with a step so that the groove surface side of the insertion path becomes higher at the boundary between the groove surface of the insertion path and the threaded surface.

Fig. 12 is a simplified diagram of an intermediate insertion nut 設け provided with a step that thickens the groove side of the insertion path at the boundary between the groove of the insertion path and the thread.

FIG. 13 is a plan view of the seat surface side of the intermediate insertion nut shown in FIG.

FIG. 14 is a half sectional view showing a cross section of the bolt core in the left half when the bolt is screwed into the intermediate insertion nut shown in FIG.

Figure 15 shows an intermediate insertion nut with a taper shape when scraping off the nut. FIG.

Fig. 16 is a cross-sectional view showing a state in which an intermediate insertion nut having a taper shape when the nut is cut off is slid by tightening.

Fig. 17 is a half cross-sectional view of the side of a side when a bolt is screwed into an intermediate insertion nut that has a taper when a nut is cut off.

Fig. 18 shows an intermediate insertion nut with a taper shape when scraping off the nut thread.The nut is screwed together, sandwiched with the lower intermediate insertion nut as a set, and tightened. The side cross-sectional side view showing a state in which when sliding, it was slid by tightening, and because the diameter of the threaded portion was smaller than the bolt diameter, it was fixed by the force of pushing. Figure 19 shows the insertion path of a generally C-shaped intermediate insertion nut 卜 with the side face of a common nut 切 cut off, and the bolt has a space in which it can move in the bolt axis direction. The nut is blocked.

Fig. 20 shows a bag nut with a structure in which one of the seating surfaces of the intermediate insertion nut is closed. BEST MODE FOR CARRYING OUT THE INVENTION

The side of a nut-shaped body with a thread (1) or a groove that can be screwed into a bolt (2) or the entire circumference (3) is cut into a substantially C shape, and the notch is bolted Insertion path

(4) In part (5) or all (6) of the insertion path, the positional relationship and shape groove (7) that suppresses the movement of the bolt along the helical axis is provided in the nut-shaped body. The intermediate insertion nut (9) is arranged at an angle (8) parallel to the bearing surface. For ease of understanding, the side of a general nut is cut out to form an approximate C shape, and the cutout is used as a bolt insertion path. In the insertion path, a saw-shaped groove (7) is provided so that the bolt does not come off during insertion and the screw thread of the bolt can move in parallel. A large groove mountain is necessary to increase the strength, so inevitably bolt piles (10) and valleys

A saw-tooth shape following (1 1) is desirable. At that time, the boundary between the groove and the thread of the intermediate insertion nut is almost continuous (12). Even if the tightening operation is performed in this state, the screw at the end of the insertion direction in the intermediate insertion nut 卜 and the screw thread of the bolt will be pushed out of each other by tightening and will be displaced from the helical axis of the intermediate insertion nut. . Therefore, when the above-mentioned method is used to form an intermediate insertion nut, a groove that can be screwed into the bolt is provided. Rather than being arranged around the entire circumference, it is desirable to eliminate the thread at the end of the insertion in the intermediate insertion nut, in other words, to have a part (2) with a groove that can be screwed into the bolt. Although there is no strength, there is an advantage that the process of tapping can be omitted.

Next, an intermediate insertion nut with an angle of inclination (1 3) in a saw-shaped groove is also conceivable so that the distance from the object to be fixed is closer during insertion than when screwing. In that case, in order for the intermediate insertion nut to come off, it must be further in close contact with the object to be fixed. In other words, the structure cannot be removed unless it moves up the slope. Also, in this intermediate insertion nut, if the diameter of the threaded part is made smaller than the bolt diameter, when tightening work, the bolt will be moved to the back when entering the back while changing the posture. Because the force to push in is applied, even if the diameter of the threaded part is smaller than the bolt diameter, it can reach the back while pushing the nut apart. Therefore, it also functions as a locking nut.

As a similar method, an intermediate insertion nut with a saw-shaped groove arranged in an arc (14) can be considered. Insertion starts at an angle such that the screwed portion is farther away from the object to be fixed than the insertion path, and becomes almost parallel to the object to be fixed at the time of screwing. This also functions as a locking nut under the conditions described above.

Another similar method is that the insertion path is twisted about the bolt insertion direction (15), or that the insertion path is twisted around the saw groove and the bolt insertion direction (16 ) Can also be considered. It also functions as a locking nut under the conditions described above.

A method as a further solution is described below. First, a side surface of a general nut is cut into a substantially C shape, and a saw-shaped groove (7) is provided in the insertion path of the intermediate insertion nut having the notch portion as a bolt insertion path. Next, the nut is cut off so that it can slide along the spiral axis within 1 pitch with respect to the bolt mountain (1 7). Figure 9 shows a single peak when the nut is cut off so that the bolt can slide up and down. Since this nut has no orientation on the mounting surface, it does not matter which is the seating surface. A simplified version of FIG. 9 is shown in FIG. The front is a saw-shaped groove and the back is a saw-shaped groove with an insertion path. A plan view of the bearing surface of the intermediate insertion nut shown in FIG. 10 is shown in FIG. Then screw the bolts together Fig. 14 is a half cross-sectional view of the front of the insertion path. The left half shows a cross-sectional view of the bolt core.

Next, a step (2 0) or an inclination or a height difference between the groove surface (1 8) of the insertion path and the groove surface (19) that can be screwed or screwed with the bolt becomes higher on the groove surface side of the insertion path. An object with protrusions is also conceivable. Alternatively, there may be a step (2 3) or a slope or protrusion with a thick groove on the insertion path at the boundary between the groove (2 1) of the insertion path and the groove (2 2) that can be screwed or screwed into the bolt. Conceivable. Since these nuts have the orientation of the mounting surface, it is necessary to consider which side the seating surface will be, but it is an effective structure when considering load resistance.

When the tightening operation is performed by taking the above-mentioned measures, even if the screw at the end of the insertion direction and the thread of the bolt are trying to push out each other by tightening, the nut is blocked by a step. Bolts do not come off from the spiral shaft.

As described above, the thread (1) or the groove that can be screwed with the bolt, as long as it can be screwed without drawing a helix, a short straight line assembly or a projection assembly can be used. ,.

The above description has been made by replacing the threading of the threaded portion with a common nut female thread. However, in fact, it is desirable that the diameter of the common nut female thread or a commercially available tap thread be smaller. This is because the diameter of a general cutting bolt is smaller than that of a nut or tap. In addition, as described above, the nut is cut off so that it can slide along the spiral axis within one pitch with respect to the bolt mountain. It seems to be sufficient to cut one pitch. This is because it cannot be removed unless it is rotated 90 degrees from the posture when tightening is completed. Also, even when temporarily fixed, in the case of an intermediate insertion nut 規格 with a standard length of 3 minutes, it is not easily removed because the step is nearly 4 millimeters. As shown in Fig. 15, if the screw has a locking function with a taper on the thread, the slide amount needs to be close to 1 pitch.

The diameter of the threaded portion will be described a little more below. As described above, when the nut is cut off, if a taper (2 4) is added, it is screwed together (Fig. 17), and when tightening is performed, the slide (2 5) When the bolt diameter is reduced, the threaded part diameter also becomes smaller, and the force to spread out acts as a locking nut (Fig. 1). Next, the shape of the above intermediate insertion nut is described. The seating surface of the intermediate insertion nut may be hexagonal or octagonal, but the quadrangle seems to be a reasonable shape. It is desirable to chamfer each side to reduce the distance from the bolt shaft. In order to prevent over-tightening with a spanner, it is desirable to shorten the straight part of the side by chamfering in order to reduce the tightening torque. Also, in the insertion path of the generally C-shaped intermediate insertion nut with the side face of a general nut cut off, there is a space (26) in which the bolt can move in the bolt axis direction. It is also possible that the end is clogged (2 7). In that case, it is not an intermediate insertion nut, but a nut that can be inserted from the end of the bolt and moved quickly to any location.

Next, as an applied product, if the above-mentioned intermediate insertion nut has no directionality, an intermediate insertion type long nut can be obtained by adding the nut to the bolt shaft direction. For those with directionality, an intermediate insertion-type long nut can be obtained by taking the stable direction and reversing each other to make a shape that extends in the bolt axis direction.

As other application products, the above-mentioned intermediate insertion nut is provided on the main body side of the article, and the structure is such that the bolt side is the attachment member, the foot of the kotatsu, the power pole and the scaffolding bolt. In addition, a bag nut having a structure in which one of the seating surfaces of the intermediate insertion nut is closed (28), a bottle lid, and the like are also conceivable. Industrial applicability

The advantages of size are described below. It became a compact intermediate insertion nut that was almost the same size as a general nut. Therefore, the use opportunity increased. It can also be manufactured at low cost. Production by press or former is also possible.

Next, advantages of the safety or the stability at the time of temporary fixing will be described below. When the thread of the threaded part is cut by about one-quarter pitch, safety is increased because the structure can only be removed by rotating it in the direction of loosening about 90 degrees from the posture when tightening is completed. In addition, even when temporarily fixed, the intermediate insertion nut of the standard of 3 minutes had a step of nearly 4 mm, so it was not easily removed, and stability was increased.

Other advantages are described below. Reduce the diameter of the threaded part or taper the threaded part

By attaching one, it will function as a locking nut, and its usage has expanded.

Claims

The scope of the claims

1. The side of a nut-shaped body with a groove that can be screwed or engaged with a bolt partially or around the entire circumference is cut into a substantially C shape, and the notch is used as a bolt insertion path. -Intermediate insertion characterized in that the groove of the positional relationship and shape that suppresses the bolt from moving along the spiral axis is arranged at an angle parallel to the seating surface of the nut-shaped body in part or all Nuts.

2. The side of a nut-shaped body provided with a thread or a groove that can be screwed with a bolt is partially or entirely cut out to form a substantially C shape, and the notch is used as a bolt insertion path. -The groove of the positional relationship and shape that suppresses the bolt from moving along the spiral axis at the part or all of the groove is inclined at an angle with respect to the seating surface of the nut-shaped body, or the nut-shaped body An intermediate insertion nut that is arranged in an arc to change its posture.

3. The side of the nut-shaped body with a part or the entire circumference of the groove that can be screwed or screwed with the bolt is cut into a substantially C shape, and the notch is used as the bolt insertion path. -Part or all of which is twisted about the bolt insertion direction, or a positional relationship that inhibits the bolt from moving along the spiral axis in part or all of its insertion path In addition, the groove of the shape is arranged in a twisted manner about the bolt insertion direction.

4. The intermediate insertion nut according to claims 1 to 3, further comprising a thread that can slide along the spiral axis within one pitch with respect to the bolt thread or a groove that can be screwed into the bolt. A feature, or a step, an inclination, or a protrusion is provided at the boundary between the groove surface of the insertion path and the groove surface that can be screwed or screwed with the bolt so that the groove surface side of the insertion path becomes higher. Alternatively, a step, an inclination, or a protrusion is provided at the boundary between the groove of the insertion path and the groove that can be screwed or screwed with the bolt so that the groove side of the insertion path becomes thicker.

5. An intermediate insertion length characterized in that, in the intermediate insertion nuts according to claims 1 to 4, the intermediate insertion nuts having no directionality are formed by adding the nuts to the bolt shaft direction. For nuts or intermediate insertion nuts の having directionality according to claims 1 to 4, the bolt axial direction should be opposite to each other in consideration of the stable direction. An intermediate insertion type long nut characterized by a shape that is added in the direction.

6. A connecting device including an intermediate insertion nut according to claims 1 to 4 provided on the main body side of the article and having a structure in which the bolt side is an attachment member, a foot of the kotatsu, a power pole and a scaffolding bolt, and the like.

7. A connecting device including the features of claim 1 to claim 4, wherein one seating surface is closed, a bag nut, a bottle lid, and the like.

8. From the end of the bolt comprising the features of claim 1 to claim 4, wherein the end of the insertion path is closed, and a space in which the bolt can move in the direction of the bolt axis is included. A nut that can be inserted and quickly moved to any location.