JP5850820B2 - Spiral structure and manufacturing method thereof - Google Patents

Description

  The present invention relates to a helical structure used for various applications and a method for manufacturing the same.

  In manufacturing a member in which wings are connected in a spiral shape (hereinafter referred to as a spiral wing), generally, a spiral wing member is formed, or a process such as gathering or cutting a strip-like wing member on one side is performed. The first method (see FIG. 7 (A)), which is formed into a spiral shape and fixed to the surface of the rod body that serves as the shaft, cuts a plurality of arc-shaped or ring-shaped wing members, and connects them. The second method (see FIG. 7 (B)) that is fixed to the surface of the rod body that forms the shaft while being spirally formed, and the third method (FIG. 7 (C)) that scrapes the spiral blade and shaft from the cylindrical material. (See Patent Document 4 below).

JP 09-136111 A Japanese Patent Laid-Open No. 10-166087 JP 2000-130979 A Japanese Patent Application Laid-Open No. 07-290176

However, in the first method, it is difficult to form the gathers in an orderly manner, and it is also difficult to accurately attach the finished spiral to the shaft. In addition, the presence of the gathers and cuts has a problem that it becomes a resistance to suppress functional efficiency in use for the purpose of fluid passing through the surface of the spiral wing, and that the thickness of the wing cannot be adjusted.
The second method has a problem that the yield of the band-shaped wing member is poor, the joint between the wing member and the wing member, the wing member and the shaft is fragile, and the thickness of the wing cannot be adjusted.
The third method is not suitable for mass production because cutting requires a great deal of labor and time, and requires a dedicated and expensive machine and has a problem of poor yield.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a spiral structure capable of mass-manufacturing at a high yield and capable of adjusting the thickness of a blade with an easy process and a manufacturing method thereof. To do.

  The spiral structure according to the present invention, which has been made to solve the above problems, includes a spiral wing and a shaft that supports the spiral wing at the center of the spiral, and the spiral wing has an equal cross-sectional shape over its entire length ( The cross-sectional area is also equal (for example, by extrusion), and a plurality of flexible strips (long objects) are connected to each connection key (a connection key protruding in a convex shape and a connection key submerged in a concave shape). And the like.

The spiral wing has a flexible single or multiple sub-part strips on the surface of the component strips, so that the surface of the spiral wings can be appropriately fleshed. )) May be combined together.
The locking key includes a hook that engages with each other and a support key that maintains a state in which the hooks of the component strip and the sub-component strip are engaged with each other.

You may take the structure which equips the surface of the said axis | shaft with the connection key which ensures the said component strip in a spiral shape. The connection key is a ridge formed on the surface of the component strips to be connected to each other and having a uniform cross-sectional shape over the entire length, or a groove into which the projection fits, and these are fitted to each other. It has a cross-sectional shape that can perform a hozo-like function such that separation by a pulling force other than the front-rear direction (longitudinal direction of the component strip) becomes impossible. For example, in the case of a ridge, the shape is an inverted trapezoidal shape or a circular shape with the tip extending from the base, or a shape with a hook to prevent it from coming off.

  A method for manufacturing a spiral structure according to the present invention made to solve the above-described problem is a method for manufacturing a spiral structure including a spiral wing and a shaft that supports the spiral wing at the center thereof, on the surface of the shaft. A basic step of providing a connecting key (anchor) for securing the parts in a spiral shape, a plurality of parts constituting the spiral blade on the surface of the shaft, a connection key on the surface of the shaft and each of the parts It is characterized in that it undergoes an assembling process that is integrally combined via a connecting key.

  It is good also as a manufacturing method of the spiral structure which passes through the fleshing process which fixes the said subcomponent strip to the surface of the said component strip integrally via the said connection key or a locking key.

  The basic process is a process of providing a helical anchor on the surface of the shaft. That is, a connecting key may be engraved on the surface of the shaft, or a component strip provided with a connecting key for securing a component strip constituting the spiral wing may be fixed to the surface of the shaft. There may be. Further, one or a plurality of side parts (longitudinal direction of the helical axis) and the phase-connected parts are formed into a spiral shape without a gap between each other, and are mutually connected via an adjacent spiral joint portion every rotation. It is also possible to simultaneously form a shaft for supporting the spiral wing and its anchor together with the spiral wing and its anchor.

  As described above, according to the spiral structure and the manufacturing method thereof according to the present invention, the specification of the spiral blade according to the purpose including the thickness of the spiral blade is accurate and relatively easy. Since it can be freely adjusted, it is possible to provide a large number of precise helical structures in a certain time and to provide a manufacturing method capable of mass production with a high yield.

It is a perspective view which shows the example of the helical structure by this invention. It is an example of the spiral wing | wing in the spiral structure by this invention, (A): Sectional drawing, (B): Exploding sectional view, (C): Exploding side view. It is an example of the spiral wing | wing in the spiral structure by this invention, (A): Sectional drawing, (B): Exploding sectional view, (C): Exploding side view. It is an example of the spiral wing | wing in the spiral structure by this invention, (A): Sectional drawing, (B): Exploding sectional view, (C): Exploding side view. 1A is a cross-sectional view, FIG. 1B is a perspective view, and FIG. 3C is a cross-sectional view of a component strip that can be employed at the tip of a spiral wing. 1A is a sectional view, and FIG. 1B is a perspective view showing an example of a spiral structure according to the present invention. It is a perspective view which shows the example of the conventional spiral structure.

Embodiments of a spiral structure according to the present invention will be described below together with a manufacturing method thereof with reference to the drawings.
The spiral structure according to the present invention includes a spiral blade 1 and a shaft 2 that supports the spiral blade 1 at the center thereof, and the spiral blade 1 has a plurality of cross-sectional shapes that are equal throughout the entire length and have flexibility. The component strips 3 are integrally combined via each connection key 4 or locking key.
Hereinafter, the part strip 3 farthest from the center of the spiral of the spiral blade 1 (hereinafter referred to as the spiral axis) is referred to as a tip strip 3a.

The shaft 2 is a rod body that is formed hollow or non-hollow depending on the application, and a processing according to the mode of the bearing or other shaft to be connected is applied to the end portion or the intermediate portion. The
The component strip 3 is a member having a uniform cross-sectional shape formed by extruding a material such as metal or resin, and may be a hollow material or a non-hollow material depending on the application.

  The cross-sectional shape of the component strip 3 is wound around the peripheral surface of the shaft 2 or the periphery of the spiral shaft while keeping a specified distance (pitch) (or in close contact) depending on the material, and spiraling. However, on the assumption that it is deformed so as to shift by a predetermined amount in the longitudinal direction of the shaft 2, it can withstand the deformation accompanying it and in a shape that can ensure good connection between the component strips 3 with the deformation applied Is set.

  As the first embodiment, the spiral structure includes a basic step of spirally providing a connection key 4 for securing the component strip 3 on the surface of the shaft 2, and the spiral blade 1 on the surface of the shaft 2. An assembly step of integrally combining a plurality of component strips 3 constituting the shaft 2 via a connection key 4 on the surface of the shaft 2 and a connection key 4 of each component strip 3, and a connecting portion of the spiral blade 1 that has undergone the assembly step, And it forms through a reinforcement process, such as welding to the connection part of the said spiral blade 1 and the axis | shaft 2. FIG.

  The basic process may employ a method of engraving the connection key 4 on the surface of the shaft 2, and the connection key 4 is provided on the surface of the shaft 2 where the connection key 4 is not engraved. The part strip 3 may be fixed. Further, the plurality of component strips 5 are connected to each other through the joint portion 7 on each side surface (hereinafter, the bundle of the plurality of component strips is referred to as “unit bundle”), and the unit bundle is formed into a spiral shape. The shaft 2 and the connecting key 6 may be formed simultaneously by connecting the joint portions 7 attached to the outer side surface of the unit bundle to each other each time the spiral of the shaft is rotated.

The spiral blade 1 in the example of FIG. 1 is an example in which the component strip 3 has a three-stage structure.
In this example, the height of the part strip 3 is set lower as the part strip placed closer to the shaft, and the amount of deformation associated with winding the part strip 3 around the shaft 2 is reduced and made uniform.
The part strip 3 of the example is appropriately provided with a side-like connection key 4 (see FIG. 1 or FIG. 2).

  Here, the connecting key 4 refers to both the concave and convex portions that fit into each other. The convex and concave portions may be directed to the tip of the spiral wing or the spiral axis. good. In the cross-sectional shape, it may be the one that has been provided with a detachment measure that has been widened, or a detachable person whose side surfaces are parallel or tapered, and in the latter case, the convex portion. In a state where the recess is fitted, a pin for preventing the connection between the two may be inserted from the side.

By engraving a spiral connecting key 4 on the surface of the shaft 2 (see FIG. 1 (A)), the connecting key 4 has a desired spiral on the surface of the shaft 2 with high accuracy by an NC machine tool or the like. As long as it is engraved, the spiral wing 1 can be assembled with relatively high accuracy using the connecting key 4 as a fulcrum.
Furthermore, if welding or the like is applied to the connecting portions of the component strips 3, the longitudinal displacement of the component strips 3 is prevented, which contributes to maintaining the shape of the spiral blade 1 and increasing the strength.

The example shown in FIG. 3 is an example of the spiral blade 1 in which the component strip 3 has a six-stage structure.
In this example, the spiral blade 1 as a whole adopts a shape having a relatively large number of irregularities, but by dividing it vertically, the cross-sectional shape of one part strip 3 can be made relatively simple, and the hollow shape Or it can respond even if it is in any non-hollow shape.

This example is an example in which the component strip 3 having the connection key 4 is fixed to the surface of the shaft 2 on which the connection key 4 is not engraved, and various fixing means such as welding and bonding are relatively used. An easy plate-shaped fixing unit 3b may be provided (see FIG. 3B).
The connecting key 4 in this example is composed of a keyhole-shaped keyhole and a circular cross-section key that fits into the keyhole.

The example shown in FIG. 4 is a second embodiment, and is an example of the spiral blade 1 in which the component strip 3 has a plurality of stages in the vertical and horizontal directions.
By combining the component strips in the left-right direction via the connecting key 4, the cross-sectional shape of each component strip 3 constituting the spiral wing 1 is simplified, and it is possible to appropriately flesh sideways according to the application and specifications. It becomes. It is the same as the example shown above that it can cope with either a hollow shape or a non-hollow shape.

The example shown in FIG. 5 is a third embodiment, which is an example of a spiral structure in which a single shaft 2 is provided with four spiral blades 1.
The component strip 5 used in this example includes a shaft forming portion 5a and a base portion 5b.
The shaft forming portion 5a of the component strip 5 is connected to the four component strips 5 in the longitudinal direction of the spiral shaft via the joint portions 7 on each side surface (hereinafter, these four are referred to as “unit bundles”). (It is not necessarily limited to four, but one or a plurality of connected ones may be formed in a spiral.) Each time the spiral of the unit bundle rotates once. Furthermore, the shaft 2 and the connecting key 6 are formed simultaneously by connecting the joint portions 7 attached to the outer edge side surfaces of the unit bundle.

  The joint portion 7 includes a unit bundle in which side surfaces are connected in multiple layers or a convex portion formed on one side surface of each component strip constituting the unit bundle, and a concave portion formed on the other side surface of an adjacent component strip. It is necessary to be configured such that the unit bundle or each component strip constituting the unit bundle is not separated, such as fitting (see FIG. 5A).

Also in this example, the height of the part strips 3 and 5 is set lower as the part strips 3 and 5 placed closer to the center of the shaft, and the amount of deformation caused by winding the part strip 3 around the part strips 3 and 5 sequentially Reduction and equalization.
The component strip 3 of the example is appropriately provided with a horn-like or plate-like connection key 4 (see FIG. 5), and the component strip 5 closest to the spiral axis is provided with a plate-like connection key 6 on the surface thereof.

The component strips 3 and 5 in this example have a hollow structure, and in order to avoid the deformation of the connecting key 4 due to the deformation of the component strips 3 and 5 in a spiral shape, the component strips 3 and 5 are the closest to the shaft or the like. The hollow portion of the component strip 5 that forms a spiral is provided with a shape retaining column 8 that interconnects the center of the top and bottom surfaces.
In addition, the shape retaining column 8 may be provided on the component strip 3 other than the component strip 5, and even in the form, a form that achieves the object may be appropriately selected.

  Further, each component strip 3, particularly the tip strip 3a, may be formed by molding an elastic material (for example, a rubber material) in the same shape as the desired component strip 3. In this way, each part strip 3 can be freely selected and exchanged according to the purpose of use and the environment (see FIG. 5C).

The example shown in FIG. 6 is the fourth embodiment, and is similar to the example shown in FIG. 5 and is provided with hollow component strips (shaped holding columns 8 that interconnect the central portions of the top and bottom surfaces thereof). 3) is an example of a spiral blade 1 having an upper and lower four-stage structure.
Also in this example, the height of the component strip 3 is set to be as low as the component strip 3 placed at a position closer to the shaft 2, and the amount of deformation associated with winding the component strip 3 around the shaft 2 is reduced and made uniform. .
The component strip 3 of this example is appropriately provided with a horn-shaped or plate-shaped connection key 4 (see FIG. 6A), and the component strip 3 closest to the spiral axis has a plate-shaped connection key 4 on its surface. Is provided.

  In this example, a plurality of sub-component strips 9 having the same cross-sectional shape over the entire length and having flexibility are provided on the side surfaces (surfaces) of the component strips 3, and each of the connecting keys 4 or the locking keys is provided. It is combined integrally.

The locking keys in this example are provided on the back surface of the sub-component strip 9 to be mounted for desired fleshing on the spiral wing 1 and on the side surface of the component strip 3 that supports the sub-component strip 9. And hooks 10 and 10 that engage with each other, and a support key 11 that maintains the state in which the hooks 10 and 10 of the component strip 3 and the sub-component strip 9 are engaged with each other.
The hook 10 is provided in a direction in which the hooks 10 are engaged with each other in the width direction of the component strip 3 and the sub-component strip 9, and both the side surface of the component strip 3 and the fixing surface of the sub-component strip 9 are both provided. By providing the recess 12 that accommodates the hook 10, the side surface of the component strip 3 and the fixing surface of the sub-component strip 9 are brought into close contact with each other.

Further, in a state in which both hooks 10 are engaged, the support key 11 is positioned in close contact with the sub-component strip 9 so as to restrict movement in a direction opposite to the direction in which the hooks 10 are engaged. 11 is suitably fixed to the side surface of the component strip 3 with bolts 13 so that the connected state of both the component strip 3 and the sub-component strip 9 is maintained.
In the above example, the support key 11 is bolted, but a key having various forms that can be fixed independently of the bolt 13 may be provided in the same manner as the connection key 4. For example, the other component strip 3 can also function as the support key 11.

1 spiral wing, 2 axes,
3 parts strip, 3a tip strip, 3b fixing section,
4 connection key,
5 parts strip, 5a shaft forming part, 5b foundation part,
6 connecting keys, 7 joints, 8 shaped columns,
9 sub-parts, 10 hooks, 11 support keys, 12 recesses, 13 bolts,

Claims (7)

A spiral wing and a shaft that supports the spiral wing at the center of the spiral;
The spiral wing is formed by integrally combining a plurality of component strips having the same cross-sectional shape over the entire length and having flexibility through respective connecting keys,
A spiral structure having a connection key for securing the component strips spirally provided on a surface of the shaft. A spiral wing and a shaft that supports the spiral wing at the center of the spiral;
The spiral wing is formed by integrally combining a plurality of component strips having the same cross-sectional shape over the entire length and having flexibility through respective connecting keys,
The spiral wing is formed by combining one or a plurality of flexible sub-part strips on the surface of the part strips through each connecting key or locking key.
The locking key includes a hook that engages with each other and a support key that maintains a state in which the hooks of the component strip and the sub-component strip are engaged with each other.
A spiral structure having a connection key for securing the component strips spirally provided on a surface of the shaft. A spiral wing and a shaft that supports the spiral wing at the center of the spiral;
The spiral wing is a method of manufacturing a spiral structure in which a plurality of strips having the same cross-sectional shape over the entire length and having flexibility are integrally combined via respective connecting keys and formed into a spiral shape. Because
On the surface of the shaft, a basic process of providing a connection key for securing the component strip in a spiral shape;
A spiral structure characterized by undergoing an assembly process in which a plurality of component strips constituting the spiral blade are integrally combined on the surface of the shaft via a connection key of the surface of the shaft and a connection key of each component strip. Manufacturing method. A spiral wing and a shaft that supports the spiral wing at the center of the spiral;
The spiral wing is formed by integrally combining a plurality of component strips having the same cross-sectional shape over the entire length and having flexibility through respective connecting keys,
The spiral wing is formed by combining one or a plurality of flexible sub-part strips on the surface of the part strips through each connecting key or locking key.
The locking key is a method for manufacturing a spiral structure comprising a hook that engages with each other and a support key that maintains a state in which the hooks of the component strip and the sub-component strip are engaged with each other,
On the surface of the shaft, a basic process of providing a connection key for securing the component strip in a spiral shape;
An assembly step of integrally combining a plurality of component strips constituting the spiral blade on the surface of the shaft via a connection key of the surface of the shaft and a connection key of each component strip;
A method for manufacturing a spiral structure, comprising: a fleshing step in which the sub-component strip is integrally fixed to the surface of the component strip via the connection key or the locking key. 5. The method for manufacturing a spiral structure according to claim 3 , wherein in the basic step, a connection key is engraved on a surface of the shaft. 5. The manufacturing of the spiral structure according to claim 3 , wherein in the basic step, a component strip having a connection key for securing the component strip is fixed to a surface of the shaft. Method. In the basic process, one or a side and a plurality of connected component strips having a connection key for securing the component strips are formed into a spiral shape without a gap between each other, and each time one rotation is performed, through an adjacent spiral joint portion. 5. The method for manufacturing a spiral structure according to claim 3, wherein the spiral structure is connected to each other.

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