WO2010123149A1

WO2010123149A1 - Fixture

Info

Publication number: WO2010123149A1
Application number: PCT/JP2010/057532
Authority: WO
Inventors: 敬太松井
Original assignee: Matsui Keita
Priority date: 2009-04-23
Filing date: 2010-04-21
Publication date: 2010-10-28

Abstract

Provided is a fixture that applies pressure at two locations, deforms easily, and can be reliably affixed to a target object even if there is some variation in the diameter of the target object. The fixture (1) is elastically deformable, and at 90° intervals around the circumference of the fixture, the inner contour (11) of said fixture is provided with: two opposing inward protrusions (11a, 11a) disposed radially inwards of the outer contour (21) of the target object (2); and two opposing outward concavities (11b, 11b) disposed radially outwards of the outer contour (21) of the target object (2). Pressure (K1, K2) applied to the outward concavities (11b, 11b) of the fixture (1) causes the inner contour (11) of the fixture (1) to conform to the outer contour (21) of the target object (2), and after the target object (2) is inserted into the fixture (1), the release of pressure causes the fixture (1) to elastically return to its original shape, thereby clamping the two inward protrusions (11a, 11a) to the outer contour (21) and affixing the fixture to the target object.

Description

Fixture

The present invention relates to a fixture that repetitively couples a fixture made of an elastically deformable hollow body onto a columnar or cylindrical fixed object.

As such a fixture, one described in Patent Document 1 below is known. As shown in FIG. 23, the fixing device described in Patent Document 1 includes three inner

peripheral portions

51, 51 in which a deformable sleeve-shaped fixing device 5 is disposed radially inside the outer peripheral contour 61 of the shaft 6. , 51 and three outer

peripheral portions

52, 52, 52 disposed radially outward of the outer peripheral contour 61 of the shaft 6, each inner

peripheral portion

51, 51, 51 Are equally arranged between the outer

peripheral portions

52, 52, 52 in the circumferential direction, and the radially inward pressurizing forces K1, K2, K3 are applied to the three outer

peripheral portions

52, 52, 52. As a result, the inner peripheral contour of the fixture 5 is deformed into a substantially circular shape, and is allowed to match the outer peripheral contour 61 of the shaft 6 with play, and after the shaft 6 is inserted into the fixture 5, The three inner

peripheral portions

51, 51, 51 are pressed against the outer peripheral contour 61 by the elastic return deformation of 5. Is, the fixture 5 has a configuration which is fixed to the shaft 6.

JP-A-9-11055

However, according to the conventional fixture described above, the radially inward pressurizing forces K1, K2, and K3 are equally applied to the three outer

peripheral portions

52, 52, and 52 of the cylindrical fixture 5. Since the inner peripheral contour of the fixture 5 is deformed into a predetermined circular shape, the amount of deformation of the fixture 5 becomes smaller than that of the two-point pressurization, and the circular position where the detachable state can be reached. Limited. As a result, since the amount of deformation of the fixture 5 cannot be set large, a large return deformation cannot be applied to the fixture 5 and a large tightening force cannot be obtained. In particular, when a shaft manufactured by a molding machine having a large tolerance such as forging is used as it is, there is a large difference between the inner diameter of the inner peripheral contour of the fixture 5 deformed into a substantially circular shape and the outer diameter of the shaft 6. If this occurs, there is a problem in that a sufficient tightening force cannot be obtained.

In addition, since the fixture 5 is deformed into a substantially circular shape by three-point pressurization, a special dedicated jig is required, and if a constant pressure is not applied at three points, the fixture 5 is deformed into a substantially circular shape. It was necessary to use a high-precision and expensive dedicated jig and skilled advanced operation technology.

Therefore, the present invention can secure the fixing tool to the fixing object even if there is some variation in the diameter of the fixing object so that the amount of deformation of the fixing tool composed of a substantially cylindrical fixing tool capable of elastic deformation can be increased. It is possible to provide a fixture that can be easily and easily deformed with a commercially available vise or pliers and can be fixed to a fixed object without using a special and expensive dedicated jig. Objective.

In order to achieve the above-described object, in the invention according to claim 1 of the present application, two inner peripheral contours 11 of the elastically deformable fixture 1 are arranged radially inside the outer peripheral contour 21 of the fixed object 2. Inwardly projecting

portions

11a, 11a that are opposed to each other, and two opposing outwardly recessed

portions

11b, 11b that are arranged on the radially outer side of the outer peripheral contour 21 of the fixed object 2 are provided. 11a, 11a and outwardly recessed portion 11b. 11b is alternately arranged at intervals of 90 degrees in the circumferential direction, and

pressure receiving portions

12a and 12a are formed on the outer periphery of the fixture 1 so as to face the outwardly recessed

portions

11b and 11b and receive pressure applied by an external force. In addition, the radially inwardly applied pressures K1 and K2 are applied to the

pressure receiving portions

12a and 12a, so that the inner peripheral contour 11 of the fixture 1 is matched with the outer peripheral contour 21 of the fixed object 2 and After the fixed object 2 is inserted into the fixed object 1, the two inwardly projecting

portions

11 a and 11 a are crimped to the outer peripheral contour 21 of the fixed object 2 due to elastic return deformation of the fixed object 1 upon releasing the pressure. Is fixed to the fixed object 2.

Further, in the invention according to claim 2 of the present application, the fixture 1 is elastically deformable and its inner peripheral contour 11 has an elliptical shape, and the major axis a of the inner peripheral contour 11 is larger than the outer diameter of the fixed object 2. And the short axis b is formed shorter than the outer diameter of the fixed object 2, and two opposed inwardly projecting

portions

11 a, 11 a disposed radially inside the outer peripheral contour 21 of the fixed object 2, And two outwardly facing outwardly recessed

portions

11b and 11b arranged on the radially outer side of the outer peripheral contour 21 of the fixed object 2, and the inwardly protruding

portions

11a and 11a and the outwardly recessed

portions

11b and 11b are While being alternately arranged every 90 degrees in the circumferential direction,

pressure receiving portions

12a and 12a are formed on the outer periphery of the fixing tool 1 at locations opposite to the outer recessed

portions

11b and 11b, and radially inward. Pressures K1, K2 are applied to the

pressure receiving portions

12a, 12a. As a result, the inner peripheral contour 11 of the fixture 1 is matched with the outer peripheral contour 21 of the fixed object 2, and after the fixed object 2 is inserted into the fixed tool 1, The two inwardly protruding

portions

11 a and 11 a are crimped to the outer peripheral contour 21 of the fixed object 2 by elastic return deformation, and the fixture 1 is fixed to the fixed object 2.

In addition, in the invention described in claim 3 of the present application, in addition to the configuration described in claim 2, the outer peripheral contour 12 of the fixture 1 has a circular or elliptical shape, and as the

pressure receiving portions

12a and 12a, the outwardly recessed portion 11b. , 11b, a pair of flat outer surfaces orthogonal to the major axis a of the inner peripheral contour 11 are formed in parallel and opposite to each other.

Moreover, in invention of Claim 4 of this application, in addition to the structure of

Claim

1, 2 or 3, in the center part of the two

inward protrusion parts

11a and 11a of the fixing tool 1, the outer periphery of the fixing target object 2 is provided. V-

shaped contact surfaces

11c and 11c that center the fixing tool 1 and the fixing object 2 when the fixing tool 1 is fixed to the fixing object 2 by contacting the contour 21 at two points, respectively, in the axial direction It is characterized by being formed.

In the invention according to claim 5 of the present application, in addition to the configuration according to

claim

1, 2 or 3, the fixture 1 can be easily deformed at the center of the two inwardly projecting

portions

11 a and 11 a of the fixture 1.

Inner grooves

11d, 11d are formed in the axial direction.

In the invention according to claim 6 of the present application, in addition to the structure according to

claim

1, 2, 3, 4 or 5, the fixture 1 is provided at the center of at least one of the two

pressure receiving portions

12a and 12a. An outer groove 12b for facilitating the deformation of is formed in the axial direction.

In the invention according to claim 7 of the present application, in addition to the configuration according to

claim

1, 2 or 3, the fixture 1 has a smaller diameter at one end in the length (center axis) direction than the outer diameter of the fixed object 2. An annular positioning step 13 is formed.

In the invention described in claim 8 of the present application, in addition to the configuration described in

claim

1, 2 or 3, the fixture 1 has a bottom that covers the end surface of the fixed object 2 at one end in the length (center axis) direction. The lid portion 14 is integrally provided through the connecting portion 15.

According to the fixture of the present invention, with the configuration described above, the elastically deformable fixture 1 is deformed by applying pressure to the

pressure receiving portions

12a, 12a from the radially outer side to the radially inner side, respectively. After the fixing tool 1 is externally fitted to the fixing object 2, the inward projecting

portions

11 a and 11 a of the inner peripheral contour 11 are changed to the outer peripheral contour 21 due to elastic return deformation of the fixing tool 1 by releasing the applied pressure. Since it is fixed by being crimped, the inner peripheral contour 11 of the fixture 1 can be deformed into a shape that allows insertion of the fixed object 2 by pressurization from two directions, and the fixture 1 is fixed. The object 2 can be fitted and connected, or the fixture 1 can be removed from the object 2. Also, when pressure is applied from two directions, the amount of deformation can be increased compared to the conventional method of applying pressure from three directions inward in the radial direction and deforming it into a circular shape. It becomes possible to take a large force. As a result, the fixing tool 1 can be reliably fixed to the fixing object 2 even when the radial dimension of the fixing object 2 has some variation, and the fixing tool 1 can be easily detached from the fixing object 2. It can be done.

Furthermore, since it is sufficient to apply pressure in two directions to deform the fixture 1, there is no need to use a special and expensive dedicated jig, and the fixture 1 can be easily and easily deformed using existing pliers or a vise. Can be combined.

Further, the outer peripheral contour 12 of the fixture 1 is formed in a circular shape or an elliptical shape, and the inner peripheral contour 11 having an elliptical shape is provided as

pressure receiving portions

12a, 12a at locations opposite to the outwardly recessed

portions

11b, 11b of the outer peripheral contour 11. If the two flat outer surfaces orthogonal to the major axis a are formed to face each other in parallel, when the fixture 1 is subjected to pressure deformation using existing pliers or a vise, the pressure position and the pressure surface are determined. Since it is easy to recognize and the pressing position is not mistaken, the fixture 1 can be accurately and easily deformed and fixed to the fixed object 2.

Further, centering of the fixing tool 1 and the fixing object 2 is performed by making two points of contact with the outer peripheral contour 21 of the fixing object 2 at the intermediate portion between the two inwardly projecting

portions

11a and 11a of the fixing tool V. If the letter-

shaped contact surfaces

11c and 11c are formed in the axial direction, the fixed object 2 is supported at four points by the V-

shaped contact surfaces

11c and 11c during the return deformation due to the elasticity of the material. The object 2 is fixed in a state where it is centered at the center of the fixture 1.

In addition,

inner grooves

11d and 11d for facilitating deformation of the fixture 1 are formed in the center portion of the two inwardly projecting

portions

11a and 11a of the fixture 1 or two pressure receiving portions. If an outer groove 12b for facilitating the deformation of the fixture 1 is formed in the axial direction in the center of 12a, 12a, the setting of the pressing force when the fixture 1 is deformed, the fixture 1 The fastening force for the fixed object 2 can be adjusted.

Further, if an annular positioning step 13 having a smaller diameter than the outer diameter of the fixing object 2 is formed at one end in the length (center axis) direction of the fixing tool 1, the fixing tool 1 is coupled to the fixing object 2. At this time, the positioning step 13 is brought into contact with the end surface of the fixed object 2 so that the positioning of the fixing tool 1 with respect to the fixed object 2 can be performed accurately and easily.

Furthermore, if the bottom cover part 14 which covers the end surface of the fixed object 2 is integrally connected to one end in the length (center axis) direction of the fixing tool 1 via the connecting part 15, the fixing tool 1 is fixed. When fixing to the target object 2, the bottom cover portion 14 abuts so as to cover the end surface of the fixed target object 2 to perform positioning of the fixture 1 with respect to the fixed target object 2 and hermetic cover of the end surface of the fixed target object 2. Can do.

It is the perspective view which showed the state by which the fixing tool by this invention was fixed to the cylindrical fixed object. It is the front view which showed one Example of the fixing tool by this invention. FIG. 3 is a diagram for explaining stepwise the mechanism of operation of the fixing device according to the present invention, taking as an example the operation when the fixing device shown in FIG. 2 is fixed to a solid circular outer peripheral shaft. The front view which shows the state before deform | transforming under the pressurization by external force, (b) is the front view which shows the state which the fixing tool deform | transformed by pressurization, (c) is the state which fitted the fixing tool to the axis | shaft. The front view to show, (d) is a front view which shows the state by which the fixing tool was fixed to the axis | shaft. It is a figure which shows the fixing tool by which the V-shaped contact surface was formed in the inward protrusion part of an inner peripheral outline, (a) is a front view which shows the state before a fixing tool receives the pressurization by external force, and deform | transforms, (B) is a front view which shows the state which the fixing tool deform | transformed by pressurization, (c) is a front view which shows the state by which the fixing tool was fixed to the axis | shaft. It is a figure which shows the fixing tool which made the shape of an inner periphery outline octagon, (a) is a front view which shows the state before a fixing tool receives the pressurization by external force, and deform | transforms, (b) deforms a fixing tool. (C) is a front view which shows the state by which the fixing tool was fixed to the axis | shaft. It is a front view which shows the fixing tool which provided the groove | channel in the inner peripheral outline. It is a front view which shows the fixing tool which provided the groove | channel in the flat outer surface. It is a front view which shows the fixing tool which used the outer periphery outline as the square. It is a front view which shows the fixing tool which used the outer periphery outline as the hexagon. It is a perspective view of the fixing tool couple | bonded with the pipe. It is a perspective view of the fixture which connected two pipes. It is a longitudinal cross-sectional view of the fixture which connected two pipes. It is a perspective view of the fixing tool of the stepped fixing tool fixed to the pipe. It is a longitudinal cross-sectional view of the fixing tool of the stepped fixing tool fixed to the pipe. It is a perspective view of the fixing tool with a bottom cover part fixed to the axis | shaft. It is a fragmentary longitudinal cross-sectional view of the fixture with a bottom cover part couple | bonded with the axis | shaft. It is a longitudinal cross-sectional view which shows the Example which applied the fixing tool by this invention to the cap of a PET bottle. It is a longitudinal cross-sectional view which shows the Example which applied the fixing tool by this invention to the buttons made from resin. 1 is a front view of a pliers suitable for use in deforming a fixture according to the present invention. FIG. 20 is a front view showing a state where the pliers shown in FIG. 19 pressurize the fixture. 1 is a perspective view of a vice suitable for deforming a fixture according to the present invention. FIG. It is a perspective view for demonstrating the operating state of the vise shown in FIG. It is sectional drawing for demonstrating a prior art.

In the present invention, a fixing tool composed of a substantially cylindrical hollow body is deformed by two-point pressurization, and can be attached and fixed to an object to be fixed.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a fixture 1 according to the present invention which is fitted into a cylindrical shaft (fixed object) 2 and coupled thereto. As shown in FIGS. 2 and 3A, the fixture 1 is made of an elastically deformable material, and its inner peripheral contour 11 has an elliptical shape, and the major axis a of the inner peripheral contour 11 is outside the axis 2. Longer than the diameter, the short axis b is formed shorter than the outer diameter of the shaft 2, two opposing inwardly projecting

portions

11 a, 11 a disposed radially inside the outer peripheral contour 21 of the shaft 2, And two opposing outwardly recessed

portions

11b and 11b disposed on the outer side in the radial direction of the two outer contours 21. Further, the outer peripheral contour 12 of the fixture 1 is composed of two flat outer surfaces orthogonal to the long axis a and a cylindrical outer surface connecting the flat outer surfaces, and the two flat outer surfaces will be described later. Thus, it is formed as

pressure receiving portions

12a, 12a that receive pressure due to external force when the fixture is deformed. As shown in FIG. 2, the inwardly protruding

portions

11 a and 11 a and the outwardly recessed

portions

11 b and 11 b of the inner peripheral contour 11 of the fixture 1 are alternately arranged every 90 degrees in the circumferential direction. In a state before the fixture 1 is deformed by pressure applied by an external force, the inwardly protruding

portions

11a and 11a are located radially inward from the outer peripheral contour 21 of the shaft 2 indicated by a dotted line in FIG. In this state, the fixture 1 cannot be fitted on the outer periphery of the shaft 2.

When the

pressure receiving portions

12a and 12a of the fixture 1 are pressurized K1 and K2 inward in the radial direction, the inwardly protruding

portions

11a and 11a of the inner peripheral contour 11 are radially outward as shown in FIG. Elastically deforms so as to spread. Thereby, the inner peripheral outline 11 of the fixture 1 which was elliptical is deformed into a substantially circular shape. At the time of this deformation, the elliptical short axis b portion is larger than the diameter of the outer peripheral contour 21 of the shaft 2.

In this deformed state, the fixture 1 is fitted into the shaft 2 and set at a predetermined position as shown in FIG. Thereafter, by releasing the pressure applied to the

pressure receiving portions

12a and 12a, the fixture 1 returns and deforms due to its inherent elasticity. As a result, the inward projecting

portions

11a and 11a are deformed so as to narrow inward in the radial direction, and the inward projecting

portions

11a and 11a are crimped to the outer periphery of the shaft 2 as shown in FIG. The tool 1 is fixed to the shaft 2.

Further, when the fixture 1 is removed from the shaft 2 in order to replace the fixture 1, if the

pressure receiving portions

12a and 12a of the fixture 1 are pressurized K1 and K2 inward in the radial direction, the inwardly protruding portion 11a. 11a is elastically deformed so as to spread outward in the radial direction, whereby the fixture 1 can be detached from the shaft 2.

In the first embodiment described above, the shape of the inner peripheral contour 11 of the fixture 1 is formed in an elliptical shape. However, as shown in FIG. 4 (a), the inner portion that is in contact with the elliptical shaft 2 is used. V-shaped contact surfaces 11c and 11c for contacting the outer peripheral contour 21 of the shaft 2 at two points at the intermediate positions of the protruding

portions

11a and 11a are formed so as to extend in the length (center axis) direction of the fixture 1. May be. If comprised in this way, when the fixing tool 1 is fixed to the outer periphery of the shaft 2, the shaft 2 is positioned at the center of the fixing device 1 by the V-shaped contact surfaces 11c and 11c as shown in FIG. Thus, four points can be supported. As a result, the fixed object 2 is coupled in a state of being centered at the center of the fixture 1.

Further, as the shape of the inner peripheral contour 11 of the fixture 1, for example, as shown in FIG. Also in this case, the inward projecting

portions

11a and 11a of the inner peripheral contour 11 of the fixture 1 are caused by the pressure applied to the

pressure receiving portions

12a and 12a of the fixture 1 inward in the radial direction, as shown in FIG. It is deformed so as to spread outward in the radial direction, and becomes larger than the diameter of the outer periphery of the shaft 2. As a result, the fixture 1 is fitted into the outer periphery of the shaft 2 and released from the pressure, whereby the fixture 1 can be coupled to the circular shaft 2 by the return deformation of the fixture 1 as shown in FIG. it can. Also in this case, the shaft 2 is positioned at the center of the fixture 1 by the V-shaped contact surfaces 11c and 11 of the inwardly projecting

portions

11a and 11a of the inner peripheral contour 11 as shown in FIG. Thus, the fixed object 2 is coupled to the center of the fixture 1 in the centered state.

FIG. 6 shows an example in which

inner grooves

11d and 11d extending over the entire length (center axis) direction of the fixing tool 1 are provided at the center of the inwardly protruding

portions

11a and 11a of the inner peripheral contour 11 of the fixing tool 1. By providing the

inner grooves

11d, 11d, the fixture 1 can be easily deformed into a desired shape, and when the pressure is applied from two directions, it becomes a mark of the pressurization location.

FIG. 7 shows an example in which an outer groove 12b is provided over the entire length (center axis) in the center of the

pressure receiving portions

12a, 12a of the outer peripheral contour 12 of the fixture 1, and in this case as well, the deformation of the fixture 1 is changed. In addition, it can also serve as a mark of a pressurization location when pressurizing from two directions.

In the above-described embodiment, the outer peripheral contour 12 of the fixture 1 has a cylindrical shape having two flat outer surfaces, but an elliptical shape having two flat outer surfaces or a quadrangular shape as shown in FIGS. It may be a polygonal shape having an even number of corners such as a hexagon or a hexagon. In that case, two sides (two surfaces) opposite to each other in parallel become the

pressure receiving portions

12a and 12a.

In the above-described embodiment, the case where the cylindrical fixture 1 is applied to the solid circular outer peripheral shaft 2 has been described. However, the present invention is not limited to this structure. 1 may be a combination of a deformable boss and a shaft, or as shown in FIG. 10, when a cylindrical fixture 1 is coupled to a cylindrical pipe (fixed object) 2. Alternatively, as shown in FIGS. 11 and 12, the present invention may be applied when two cylindrical pipes (fixed objects) 2 and 2 are connected by a sleeve (fixing tool) 1.

Further, as shown in FIGS. 13 and 14, an annular positioning step 13 having a smaller diameter than the outer diameter of the shaft 2 may be formed at one end in the length (center axis) direction of the fixture 1. . If comprised in this way, when the fixing tool 1 is fixed to the axis | shaft 2, the positioning step part 13 will contact | abut with the end surface of the axis | shaft 2, and the positioning with respect to the axis | shaft 2 of the fixing tool 1 can be performed correctly and easily. In addition, it is preferable that the positioning step is set to a size that does not hinder the deformation of the fixture 1, and in some cases, it is possible to make a notch in the radial direction.

Further, as shown in FIGS. 15 and 16, a bottom cover portion 14 that covers the end surface of the fixed object 2 is integrally connected to one end in the length (center axis) direction of the fixture 1 through a connecting portion 15. You may do it. If comprised in this way, when fixing the fixture 1 to the axis | shaft 2, the bottom cover part 14 will contact | abut so that the end surface of the axis | shaft 2 may be covered, positioning with respect to the axis | shaft 2 of the fixture 1, and the end surface of the fixed object 2 A hermetic cover can be made. In addition, the bottom cover part 14 is integrally connected in the state divided in the front-back direction in the connection part 15 part so that the deformation | transformation of the main body side of the fixing tool 1 may not be inhibited.

Of course, the fixture 1 of the present invention may be formed of a metal material or a resin material. In the case of forming with a resin material, the fixing device 1 can be set so that the deformation of the fixing device 1 can be performed, for example, by finger pressure. Therefore, the fixing device of the present invention described above can be used, for example, as shown in FIG. It is applied to a hollow lid (fixing tool) 1 for closing the fixing object 2), or a hollow button body (fixing tool) on a shaft-like protrusion (fixing object) 2 protruding from the base as shown in FIG. ) It can also be applied to a resin button or the like to which 1 is detachably attached. In that case, for example, as shown by arrows in FIGS. 17 and 18, the pressure-receiving portion of the hollow lid 1 or the button body 1 may be directly picked and deformed by pressing with a finger.

In addition, as shown in FIG. 18, it is preferable to form the protrusion which protruded in the flange shape outward in the radial direction in the edge part of the fixed object 2 to which the fixing tool 1 is fixed. This is because even when the fastening force due to the elastic return deformation of the fixture 1 is insufficient, the projections can hook the fixture 1 and prevent the fixture 1 from falling off.
Such a protrusion is not limited to the example shown in FIG. 18 when the material of the fixture 1 can take a large amount of deformation, but is not limited to the end of the fixed object to which the fixture is fixed. It can be formed.
Further, the height of the protrusion in the radial direction is not theoretically limited if the inner peripheral contour shape of the fixture 1 is devised. For example, when the inner peripheral contour of the fixture is elliptical, the height in the radial direction of the protrusion can be increased by increasing the ratio of the major axis diameter dimension to the minor axis diameter dimension of the ellipse.

As a means for pressurizing the fixture 1, it is only necessary to pressurize the two

pressure receiving portions

12a and 12a inward in the radial direction from both sides, so that it can be performed using existing pliers or a vice.

That is, as the pliers 3, for example, as shown in FIGS. 19 and 20, one of the two open /

close sandwiching portions

31, 32 has the one sandwiching portion 31 as a flat sandwiching surface 31 a, and the other sandwiching portion 32 has A rotary holding body 34 having a large number of holding holes 33 of different sizes is rotatably provided, while a fixed body 35 for positioning the rotary holding body 34 at an arbitrary position so that a desired holding hole 33 can be selected. What is provided may be used. Thereby, the fixing tool 1 can be pressurized and deformed by sandwiching a portion corresponding to the pressure receiving portion 12a on one side of the fixing tool 1 in the selected holding hole 33.

Further, as the vise 4, for example, as shown in FIGS. 21 and 22, an L-shaped base 42 having a fixed wall 41, and a U-shaped support portion 43 and a pressure body 44 are appropriately provided on the base 42. What is provided so as to be able to approach and separate from the fixed wall 41 by the tightening mechanism, and the width h of the support portion 43 is set to be smaller than the width H between the two

pressure receiving portions

12a and 12a of the fixture 1 by a predetermined amount. Use it. In use, the fixture 1 is placed on the support portion 43 so that the

pressure receiving portions

12a, 12a face the fixed wall 41 and the pressure body 44, and the pressure body 44 is moved to the fixed wall 41 side in this state. It is moved by the tightening mechanism and pressed until the fixed wall 41, the support body 43, and the pressure body 44 are in contact with each other. Thereby, the fixing device 1 is deformed by being pressurized by the fixed wall 41 and the pressure body 44, while the support body 43 positioned between the fixed wall 41 and the pressure body 44 makes the pressure constant. It plays the role of a stopper, and the deformation of the fixture 1 can be made constant.

In each of the above-described embodiments, the flat outer surface is formed on the outer periphery of the fixture 1 as the

pressure receiving portions

12a and 12a of the fixture 1, but the form of the pressure receiving portion 12a is not limited to this, and each of the above-described embodiments. In the example, the pressure receiving portion 12a may have a curved shape with a recessed central portion. In particular, in the case where deformation by finger pressure is possible as in the case of the fixing device 1 made of a resin material, it is desirable to have a concave shape that matches the shape of a human finger. Alternatively, a plurality of fine inverted V-shaped ridges may be provided in parallel in a direction perpendicular to the central axis of the fixture to make the surface jagged. In short, it is only necessary to have a shape suitable for applying an external force to this portion. Such a form of the pressure receiving portion is applicable to each of the above-described embodiments.

The fixture according to the present invention can be used in place of conventional fixtures such as bolts and nuts, and can be applied to industrial assembly of all products. Also, the fixture itself can be produced industrially.

1 Fixing tool (fixing tool)
2 axis (fixed object)
11 Inner peripheral contour 11a Inner protruding portion 11b Outer recessed portion 11c V-shaped contact surface 11d Inner groove 12 Outer peripheral contour 12a Pressure receiving portion 12b Outer groove 21 Outer peripheral contour

Claims

A fixing tool comprising a cylindrical hollow body that can be repeatedly fixed to a columnar or cylindrical fixed object 2, wherein the fixing tool 1 is elastically deformable and an inner peripheral contour 11 is an outer peripheral contour of the fixed target object 2. Two opposing inwardly projecting portions 11 a and 11 a arranged inside 21, and two opposing outwardly recessed portions 11 b and 11 b arranged outside the outer peripheral contour 21 of the fixed object 2. The inwardly projecting portions 11a and 11a and the outwardly recessed portions 11b and 11b are alternately arranged every 90 degrees in the circumferential direction, and the outer periphery of the fixture 1 is opposed to the outwardly recessed portions 11b and 11b. Pressure receiving portions 12a and 12a that receive pressure applied by an external force are formed, and radially inward applied pressures K1 and K2 are applied from the pressure receiving portions 12a and 12a of the fixture 1 to the two outwardly recessed portions 11b and 11b. Fixing tool 1 by being The inner peripheral contour 11 is elastically deformed into a shape that can be fitted into the outer peripheral contour 21 of the fixed object 2, and the inner peripheral contour 11 is made to match the outer peripheral contour 21 of the fixed object 2, so The fixing device characterized in that the two inwardly projecting portions 11a and 11a are pressure-bonded to the outer peripheral contour 21 by elastic return deformation.
A fixing tool that is formed of a cylindrical hollow body and can be repeatedly coupled to a fixed object 2 having a circular outer peripheral portion. The fixing tool 1 is elastically deformable, and its inner peripheral contour 11 has an elliptical shape. The long axis a of the peripheral contour 11 is longer than the outer diameter of the fixed object 2, and the short axis b is formed shorter than the outer diameter of the fixed object 2. Two opposing inwardly projecting portions 11a, 11a arranged and two opposing outwardly recessed portions 11b, 11b arranged on the radially outer side of the outer peripheral contour 21 of the fixed object 2, The outward projecting portions 11a and 11a and the outwardly recessed portions 11b and 11b are alternately arranged every 90 degrees in the circumferential direction, and the external force on the outer periphery of the fixture 1 is opposed to the outwardly recessed portions 11b and 11b. Pressure receiving portions 12a and 12a that receive pressure applied by the The inner peripheral contour 11 of the fixture 1 is fixed by applying the pressure K1 and K2 inward in the radial direction from the pressure receiving portions 12a and 12a of the fixture 1 to the two outer recessed portions 11b and 11b. Elastic deformation to a shape that can be fitted into the outer peripheral contour 21 of the object 2 and its inner peripheral contour 11 is made to coincide with the outer peripheral contour 21 of the fixed object 2, and elastic return deformation of the fixture 1 due to release of the applied pressure. The two inwardly projecting portions 11a and 11a are crimped to the outer contour 21 by the above.
The fixture 1 has a circular or elliptical outer peripheral contour 12, and two flat outer portions orthogonal to the major axis a of the inner peripheral contour 11 are provided at pressure-receiving portions 12 a, at locations facing the outer recessed portions 11 b and 11 b. The fixing tool according to claim 2, wherein the fixing tool is formed in parallel with each other as 12a.
When the fixing tool 1 is coupled to the fixing object 2 at two points in contact with the outer peripheral contour 21 of the fixing object 2 at the center of the two inwardly protruding portions 11a, 11a of the fixing tool 1, 4. A fixing device according to claim 1, wherein V-shaped contact surfaces 11c, 11c for centering with the fixed object 2 are formed in an axial direction.
An inner groove (11d, 11d) for facilitating deformation of the fixture (1) is formed in the center of the two inwardly projecting portions (11a, 11a) of the fixture (1). The fixture according to 2, 3 or 4.
The outer groove 12b for facilitating deformation of the fixture 1 is formed in the axial direction at the center of at least one of the two pressure receiving portions 12a, 12a. The fixture according to 2, 3, 4 or 5.
The fixing tool (1) is characterized in that an annular positioning step portion (13) having a smaller diameter than the outer diameter of the fixing object (2) is formed at one end in the length direction thereof. Fixture.
The fixing device (1) is characterized in that a bottom cover portion (14) covering the end surface of the fixed object (2) is integrally connected to one end in the length direction via a connecting portion (15). The fixture according to 3.