JP5879669B1 - FIXING STRUCTURE COMPRISING BOLT WITH PRESSING UNIT AND COMPONENT AND BOLT WITH PRESSING UNIT WITH FIXING STRUCTURE COMPRISING BOLT WITH PRESSING DEVICE AND COMPONENT - Google Patents

Abstract

A conventional bolt has a problem that the tip of the bolt is a pressing portion that presses the component or the like, and if the component or the like is pressed with the tip of the bolt, the component is damaged. In addition, when the parts are cutting tools such as shafts, drums, and cylindrical shanks, when these cylindrical portions are rotated with the bolts pressed, the cylindrical portions are damaged and rotation is hindered. A cylindrical threaded portion is formed on the outer periphery of the cylinder, a through hole having a circular cross section is formed on the screwing direction side of the threaded portion and concentric with the axis of the cylinder, and the screwing portion on the screwing direction side is formed. A screw body formed with a tool mounting portion on which the tool is mounted on the opposite side, and a pressing means that is rotatably mounted in a state of being prevented from being removed from the through hole and presses a component or the like, and the pressing means The above-described problem is solved by providing a pressing portion that is softer than that of the component so as to protrude from the end surface of the screw portion in the screwing direction. [Selection] Figure 1

Description

The present invention relates to a bolt with pressing means, and more specifically, a fixing structure including a bolt with pressing means and a part that are rotatably mounted on the bolt with pressing means for pressing and fastening a component and the like, and with the pressing means. The present invention relates to a bolt with pressing means having a fixing structure including a bolt and a part .

The conventional bolt has a problem that the tip of the bolt is a pressing portion that presses the component, and the component is damaged when the component is pressed with the tip of the bolt. In addition, when the parts are cutting tools such as shafts, drums, and cylindrical shanks, when these cylindrical portions are rotated with the bolts pressed, the cylindrical portions are damaged and rotation is hindered.

In the tapping tool shown in Patent Document 1 proposed in order to solve these problems, the shank portion of the tap is held by a holding bolt having a pressing piece made of a hard material that is flat at the tip and swingable. The pressing piece is made of a rocking hard material and does not rotate around the center axis of the holding bolt, so this also rotates the shank part of the tap, which is a cylindrical part, with scratches. There was a drawback of causing trouble.

Utility Model Registration No. 3137435

The present invention solves the above-mentioned conventional problems, and the parts are shafts, drums, and shank parts of taps that are cylindrical parts of a cutting tool, and the cylindrical parts of these parts are pressed with bolts with pressing means and Even if the bolt with the pressing means is rotated in that state, the cylindrical portion is hardly damaged, and the fixing structure includes the bolt with the pressing means and the parts that do not hinder the rotation, and the fixing structure including the bolt with the pressing means and the parts. The bolt with a pressing means is provided.

In order to solve the above-described problems, the bolt with pressing means of the present invention is cylindrical and has a threaded portion formed on the outer periphery body, and a through-hole having a circular cross section that is concentric with the axis of the column on the screwing direction side of the threaded portion. together formed a screw body tool mounting part is formed which tool is mounted on the opposite side of the threaded direction of the screw portion, the omission in the through-hole stop state by turnably mounted unit products A pressing structure for pressing, and the pressing means includes a bolt having a pressing means and a part provided with a pressing part that is softer than the part protruding from the end surface in the screwing direction of the screw part. The screw portion of the screw body is formed on the outer periphery of the screw body from the front end to the rear end on the screwing direction side, and the tool mounting portion is formed in a concave shape having a larger cross-sectional area than the through hole, Installed at the rear end of the pressing means Was retaining portion is positioned in said tool mounting portion, the cross section in a direction perpendicular to the center line of the screw main body of the pressing portion of the pressing means in the cross-section of the area that is orthogonal to the center line of the screw body It is a fixing structure comprising a bolt with a pressing means and a part set in a cross-section , and the pressing means is dimensioned so that it can be inserted into a through-hole of the screw body that has been heated and expanded, and has been cooled. A retaining portion formed in a dimension that cannot be inserted into the through hole of the screw body, and a dimension that can be inserted into the through hole of the screw body that has been heated and enlarged, and the cooled through hole of the screw body. A biasing spring that biases the pressing means in a direction away from the screw body is not inserted into the shaft of the pressing means. It is characterized by that.
Further, in the present invention, the pressing means is biased in a direction away from the screw body to the shaft portion of the pressing means located between the screw-side end surface of the screw body and the pressing portion of the pressing means. It is preferable that a washer not having a biasing spring function is inserted.
In the present invention, it is preferable that the washer is a flat washer or a screw locking washer.
Further, in the present invention, a cylindrical thread portion is formed on the outer peripheral body, and a through-hole having a circular cross section that is concentric with the axial center of the cylinder is formed on the screwing direction side of the screw portion. A screw main body having a tool mounting portion on which a tool is mounted on the opposite side of the screwing direction side of the portion, and a pressing means that presses the component rotatably mounted in a state of being prevented from being removed from the through hole. The pressing means comprises a fixing structure including a bolt with pressing means and a part provided with a pressing part that is softer than the part protruding from the screw-side end surface of the screw part, The threaded portion is formed on the outer peripheral body from the front end to the rear end on the screwing direction side of the screw body, the tool mounting portion is formed in a concave shape having a cross-sectional area larger than the through hole, and is formed at the rear end of the pressing means. The provided retaining part is the tool assembly. The cross section in the direction perpendicular to the center line of the screw main body of the pressing portion of the pressing means is set to a cross section located in the cross-sectional area orthogonal to the central line of the screw main body. It is a fixing structure comprising a bolt with means and a part, and the pressing means has a size that can be inserted into the through hole of the screw body that has been heated and enlarged, and cannot be inserted into the through hole of the cooled screw body A retaining part formed in various dimensions, and a dimension that can be inserted into the through hole of the screw body that has been heated and expanded, and can be freely pivoted in a state of being retained in the cooled through hole of the screw body. It is preferable that an urging spring for urging the pressing means in a direction away from the screw main body is not inserted into the shaft portion of the pressing means .

The bolt with pressing means of the present invention is cylindrical and has a threaded portion formed on the outer periphery body, and a through-hole having a circular cross section that is concentric with the axial center of the column is formed on the screwing direction side of the threaded portion. a screw body tool mounting part is formed to the tool opposite the screwing direction of the parts are mounted, and a pressing means for pressing the rotatably mounted part article by stopping state exit to the through hole The pressing means includes a bolt with a pressing means provided with a pressing portion that is softer than the component protruding from the end surface in the screwing direction of the screw portion and the component, and the screw body The threaded portion of the screw body is formed on the outer peripheral body from the front end to the rear end on the screwing direction side of the screw body, the tool mounting portion is formed in a concave shape having a larger cross-sectional area than the through hole, and the rear end of the pressing means The retaining part provided on the front It is positioned in the tool mounting portion, wherein the cross section in a direction perpendicular to the center line of the screw main body of the pressing portion of the pressing means is set to a section located to the cross section of the area that is orthogonal to the center line of the screw body A fixing structure including a bolt with pressing means and a component, wherein the pressing means is dimensioned to be inserted into the through hole of the screw body that has been heated and enlarged, and is inserted into the through hole of the screw body that has been cooled. A retaining portion formed in an impossible dimension, and a size that can be inserted into the through-hole of the screw body that has been heated and enlarged, and is secured to the cooled through-hole of the screw body. A biasing spring that biases the pressing means in a direction away from the screw main body is not inserted into the shaft of the pressing means. Because there is a pressing means Even if the fastening parts to be fastened with bolts are not damaged, and the cylindrical parts such as shafts, drums, drills, taps, end mills, reamers, chamfering cutters, cylindrical shanks, etc., these cylindrical parts are pressed by the pressing means. Even if the screw body is rotated with the attached bolt and the screw body is rotated in this state, the pressing means is idle and the pressing means does not rotate, so that the cylindrical portion is not damaged and the rotation is not hindered. There is. Furthermore, there is an effect that the bolt with the pressing means of the present invention can be manufactured easily and efficiently only by rotatably mounting the pressing means in a state where the pressing means is retained in the through hole of the screw body. Furthermore, it is possible to change the material of the pressing means according to the part to be pressed and take measures against wear, and there is an effect that the part to be fastened is hardly damaged.
Further, as in claim 2, the pressing means is biased in a direction away from the screw main body to the shaft portion of the pressing means located between the screw-direction-side end surface of the screw main body and the pressing portion of the pressing means. Even if the washer that does not have the biasing spring function is inserted in a place where it vibrates, the washer is effective in that it is difficult to loosen the bolt due to vibration.
Furthermore, when the pressing means is used as a clutch means by adjusting the pressing force of the cylindrical object, an appropriate rotational torque can be obtained.
Furthermore, the bolt with the pressing means of the present invention can be manufactured easily and efficiently simply by inserting a washer into the shaft portion of the pressing means and rotatably mounting the pressing means in a state in which the pressing means is retained in the through hole of the screw body. There is an effect that can be done. Furthermore, it is possible to change the material of the pressing means according to the part to be pressed and take measures against wear, and there is an effect that the part to be fastened is hardly damaged.
Further, as in the third aspect , the washer configured with a flat washer or a screw locking washer has an effect that the bolt with the pressing means can be made compact.
According to a fourth aspect of the present invention, a cylindrical thread portion is formed on the outer peripheral body, and a through-hole having a circular cross section that is concentric with the cylindrical shaft center is formed on the screwing direction side of the screw portion. A screw main body having a tool mounting portion on which a tool is mounted on the opposite side of the screwing direction side of the portion, and a pressing means that presses the component rotatably mounted in a state of being prevented from being removed from the through hole. The pressing means comprises a fixing structure including a bolt with pressing means and a part provided with a pressing part that is softer than the part protruding from the screw-side end surface of the screw part, The threaded portion is formed on the outer peripheral body from the front end to the rear end on the screwing direction side of the screw body, the tool mounting portion is formed in a concave shape having a cross-sectional area larger than the through hole, and is formed at the rear end of the pressing means. The retaining part provided is the tool The cross section in the direction perpendicular to the center line of the screw main body of the pressing portion of the pressing means is set to a cross section located in the region of the cross section orthogonal to the central line of the screw main body. A fixing structure including a bolt with pressing means and a part, wherein the pressing means is dimensioned to be inserted into the through hole of the screw body that has been overheated and enlarged, and cannot be inserted into the cooled through hole of the screw body. A retaining part formed in a possible size and a dimension that can be inserted into the through hole of the screw body that has been heated and expanded, and is pivoted to a state that is prevented from being removed by the cooled through hole of the screw body. A shaft portion that is freely mounted and a biasing spring that biases the pressing means in a direction away from the screw main body is not inserted into the shaft portion of the pressing means, only warms the screw main body. With pressing means the screw body Rotatably by stopping state exit the through hole can be mounted easily and can be reliably mounted, workability there is an effect that good.

FIG. 1 is a cross-sectional view of a bolt with pressing means having a fixing structure including a bolt with pressing means and a component according to the present invention. FIG. 2 is a sectional view showing a first embodiment of the washer of the present invention. FIG. 3 is a side view showing a second embodiment of the washer of the present invention. FIG. 4 is a sectional view showing a first embodiment of the present invention. FIG. 5 is a cross-sectional view showing a second embodiment of the present invention. FIG. 6 is a sectional view showing a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
The bolt 1 with pressing means of the present invention includes a screw body 2 and pressing means 3.

The screw body 2 is cylindrical and has a threaded portion 4 formed on the outer periphery of the screw body 2. A through hole 5 having a circular cross section is formed on the threaded direction side of the threaded portion 4. A tool mounting portion 6 on which is mounted is formed. The through-hole 5 is formed in a circular cross section concentrically with the center line S of the screw body 2. The thread portion 4 is generally known to be fine and coarse, but the fine portion is preferable because fine adjustment is possible.

The pressing means 3 is rotatably mounted in a state in which the pressing means 3 is prevented from being detached from the through hole 5, and the pressing means 3 has a soft pressing portion 7 of the screw portion 4. It protrudes from the end surface on the screwing direction side. Although it has been described that the pressing portion 7 is made of a softer material than the component, the entire pressing means 3 may be formed of a softer material than the component.

The pressing means 3 is attached to the screw body 2 by a method generally referred to as shrink fitting. After the screw body 2 is heated and the through hole 5 is enlarged more than the retaining portion 8 of the pressing means 3, the pressing means 3 is inserted into the through hole 5 of the screw body 2, and the screw body 2 is rotatably mounted in a state in which the screw body 2 is cooled and prevented from being detached. The shrinkage allowance is preferably an oversize in which the measured value of the retaining portion 8 is about 0.3% to 0.6% than the measured value of the through hole 5. The gap between the pressing means 3 and the through-hole 5 is desirably oversized by about 2% to 5% from the outer periphery of the pressing means 3. In the embodiment, the pressing means 3 is 6.0 millimeters, The hole 5 is set to 6.2 millimeters.

The pressing means 3 is formed with a male screw on the pressing means 3 and a nut is screwed onto the male screw, thereby forming a retaining portion 8 of the pressing means 3 so that the pressing means 3 can rotate while being retained in the through hole 5. It may be attached. The pressing means 3 can prevent the component from being damaged by lowering the hardness than the component. The flat type with the tip of the pressing portion 7 of the pressing means 3 is generally flat, but a workpiece such as a concave, V-shaped, or radial rib is selected according to the application. It can be done. The pressing means 3 is composed of a steel material, a heat treatment material, a resin, an acrylic resin, aluminum, a copper alloy, a cemented carbide material, a ceramic material, and the like, and can be selected and used depending on the application.

The washer has a flat washer 9a shown in FIG. 2 and a screw loosening prevention washer 9b shown in FIG. 3 as an example, and is located at a position facing the screw body 2 of the pressing means 3 and screwed in the screw body 2. It is inserted into the shaft portion 10 of the pressing means 3 between the end face on the direction side and the pressing portion 7 provided at the tip of the pressing means 3, and the length of the bolt 1 with the pressing means is equal to the thickness of the washers 9a, 9b. The bolts 1a and 1b with pressing means can be made compact. As the washer, a flat washer 9a and a screw locking washer 9b may be selected and used according to the intended use. The washers 9a and 9b are preferably made of a softer material than the pressing portion 7.

The tool mounting portion 6 is formed in a hexagonal cross section so that a hexagon wrench can be mounted, but may be formed in a shape corresponding to the tool so that other tools can be mounted, It can be a screwdriver or a flat-blade screwdriver.

FIG. 4 shows a first use example. When the pressing means 3 made of a softer material than the part T is screwed onto the screw part 5 of the base K with the bolt 1 and the part T is fastened, Is difficult to scratch the part T.

FIG. 5 shows a second usage example, in which a flat washer 9a is inserted into the pressing means 3 made of a softer material than the part T. FIG. When the flat washer-attached bolt 1a is screwed into the threaded portion 5 of the base K and the part T is fastened, the flat washer 9a is sandwiched between the pressing means 3 and the screw body 2 and fastened. with hardly scratched, the pressing surface of the flat washer -9a becomes good conformability, screw body 2 is slow ugly.

FIG. 6 shows a third usage example, in which a set of two screw loosening washers 9b is inserted into the pressing means 3 made of a softer material than the part T. FIG. When the bolt 1b with a screw set locking washer with two sets is screwed into the threaded portion 5 of the base K and the part T is fastened, the inner cam surface and the inner cam surface of the two set washer 9b are automatically The radial rib surface on the outside of the two-piece washer 9b is sandwiched and fastened between the pressing means 3 and the screw body 2, and the part T is hardly damaged and the screw body 2 is loosened. It becomes difficult.

DESCRIPTION OF SYMBOLS 1, 1a, 1b Bolt with a press means 2 Screw main body 3 Press means 4 Screw part 5 Through-hole 6 Tool mounting part 7 Press part 8 Retaining part

Claims (4)

A threaded portion is formed on the outer peripheral body in a cylindrical shape, and a through-hole having a circular cross section that is concentric with the axial center of the column is formed on the screwing direction side of the threaded portion, and on the opposite side of the screwing portion on the screwing direction side a screw body tool mounting part is formed of tool is attached, and a pressing means for pressing the through hole in the retaining state by pivotally mounted part article, said pressing means, said A fixing structure comprising a bolt with a pressing means provided with a soft pressing portion protruding from an end surface in the screwing direction side of the screw portion and the component , wherein the screw portion of the screw main body is screwed into the screw main body. The tool mounting portion is formed in a concave shape having a larger cross-sectional area than the through hole, and the retaining portion provided at the rear end of the pressing means is Located in the tool mounting section, The direction of the cross section pressing means bolts and parts set in the plane positioned to the cross section of the area that is orthogonal to the center line of the screw body which is orthogonal to the center line of the screw main body of the pressing portion of the pressing means The pressing means is formed to have a size that can be inserted into the through hole of the screw body that has been heated and enlarged, and that cannot be inserted into the through hole of the cooled screw body. A retaining portion and a shaft portion that is dimensioned to be inserted into the through hole of the screw body that has been enlarged by heating and is rotatably mounted in a state of being retained in the cooled through hole of the screw body. And a urging spring for urging the pressing means in a direction away from the screw body is not inserted into the shaft portion of the pressing means, and is provided with a bolt with pressing means and a component Structure . There is no urging spring function for urging the pressing means in the direction away from the screw body at the shaft portion of the pressing means located between the screw-side end surface of the screw body and the pressing portion of the pressing means. A fixing structure comprising the bolt with pressing means according to claim 1 and a part into which a washer is inserted. A fixing structure comprising the washer and the bolt with pressing means according to claim 2, wherein the washer is a flat washer or a screw locking washer. A threaded portion is formed on the outer peripheral body in a cylindrical shape, and a through-hole having a circular cross section that is concentric with the axial center of the column is formed on the screwing direction side of the threaded portion, and on the opposite side of the screwing portion on the screwing direction side a screw body tool mounting part is formed of tool is attached, and a pressing means for pressing the through hole in the retaining state by pivotally mounted part article, said pressing means, said A fixing structure comprising a bolt with a pressing means provided with a soft pressing portion protruding from an end surface in the screwing direction side of the screw portion and the component , wherein the screw portion of the screw main body is screwed into the screw main body. The tool mounting portion is formed in a concave shape having a larger cross-sectional area than the through hole, and the retaining portion provided at the rear end of the pressing means is Located in the tool mounting section, The direction of the cross section pressing means bolts and parts set in the plane positioned to the cross section of the area that is orthogonal to the center line of the screw body which is orthogonal to the center line of the screw main body of the pressing portion of the pressing means The pressing means is formed to have a size that can be inserted into the through hole of the screw body that has been heated and enlarged, and that cannot be inserted into the through hole of the cooled screw body. A retaining portion and a shaft portion that is dimensioned to be inserted into the through hole of the screw body that has been enlarged by heating and is rotatably mounted in a state of being retained in the cooled through hole of the screw body. And a urging spring for urging the pressing means in a direction away from the screw body is not inserted into the shaft portion of the pressing means, and is provided with a bolt with pressing means and a component With structure pressing means Belt.