JP7143058B2 - Cover member and member processing method - Google Patents

Description

The present invention relates to a cover member and a method of processing the member.

2. Description of the Related Art In the technique of submerging a member such as a pillar in a painting pool (hereinafter also simply referred to as “pool”) in which paint is stored and painting, there are cases where a part of the member is not desired to be painted. 2. Description of the Related Art Conventional cover members for covering surfaces of members are disclosed, for example, in Patent Documents 1 and 2.
For example, Patent Literature 1 discloses that the cross-sectional shape of a masking tool that covers horizontal steel and vertical steel in H-section steel is U-shaped. In Patent Document 1, it appears that the degree of adhesion between the H-section steel and the masking tool is not sufficient. Furthermore, it is conceivable to fix the masking tool and the H-shaped steel with a clip, but this is troublesome.
In Patent Document 2, the marking cap has a structure in which an engaging concave portion is formed corresponding to an inclined conical portion having a small diameter of a part to be marked so as to prevent the cap from coming off. The inner peripheral shape and the outer peripheral shape of the marking cap are circular.

Japanese Utility Model Laid-Open No. 2-121162 Japanese Utility Model Laid-Open No. 7-3751

However, there is a possibility that a gap may be formed between the surface of the member and the inner peripheral surface of the cover member, and the surface of the member may be painted.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reliably prevent the surface of a member from being subjected to processing such as coating.

As a means for solving the above problems, one aspect of the present invention is to prevent pretreatment or processing including painting from being performed. a cover member covering the outer peripheral surface of the member portion, the cover member comprising: an inner peripheral surface in contact with the entire outer peripheral surface of the member portion; and an outer peripheral portion that retains the shape of the inner peripheral surface; When a cutting plane including the peripheral surface and the outer peripheral portion is assumed, the continuous shape of the inner peripheral surface on the cutting plane is the same as the continuous shape of the outer peripheral surface on the cutting plane of the member portion, and the cutting plane The continuous shape of the outer peripheral surface of the outer peripheral portion in 3. is circular.
In one aspect of the present invention, in order to prevent processing including pretreatment or painting, the continuous shape of the outer peripheral surface in the cutting plane is attached to a portion of the member, and the portion of the member is attached. A cover member covering an outer peripheral surface, comprising an inner peripheral surface in contact with the entire outer peripheral surface of a portion of the member, and an outer peripheral portion that retains the shape of the inner peripheral surface, wherein , the continuous shape of the inner peripheral surface on the cutting plane is the same as the continuous shape of the outer peripheral surface on the cutting plane of the member portion, and the outer peripheral surface of the outer peripheral portion The continuous shape of is a shape that disperses stress when the outer peripheral portion receives a load from the outside , and is either an elliptical shape or a polygonal shape .
One aspect of the present invention is characterized in that the outer peripheral surface of the outer peripheral portion is provided with a fixing portion to which a fixing member having a shape along the outer peripheral surface of the outer peripheral portion is fixed.
One aspect of the present invention is characterized by further comprising a lid portion that is continuous with the outer peripheral portion.
One aspect of the present invention is characterized in that the continuous shape of the inner peripheral surface on the cutting plane is rectangular.
One aspect of the present invention is a member processing method using the cover member, characterized in that pretreatment or painting of the member is performed while the outer peripheral surface of the member is covered with the cover member. do.
In addition, the "surface of the member" described in the specification of the present application includes the "peripheral surface of the portion of the member" described in the claims (the same shall apply hereinafter).

According to one aspect of the present invention, since the continuous shape of the outer peripheral surface of the outer peripheral portion in the cutting plane is circular, when the outer peripheral portion is tightened from the outside, force is applied evenly in the circumferential direction of the outer peripheral portion. , the surface of the member and the inner peripheral surface of the cover member can be brought into close contact. Therefore, it is possible to reliably prevent the surface of the member from being subjected to processing such as coating. The processing includes pretreatment such as cleaning treatment and etching treatment of the member. In addition, when the continuous shape of the inner peripheral surface of the outer peripheral portion on the cutting plane is not circular, and the continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is circular, and the outer peripheral shape of the member is other than circular. can be widely applied to In addition, compared to the case where the surface of the member is covered with a masking tape, it is not necessary to wind the masking tape and remove it after painting, so workability can be improved. Moreover, it is preferable because it does not affect the skill of the operator. In addition, compared to the case of fixing the cover member with a clip, it takes less time and effort, so workability can be improved.
According to one aspect of the present invention, the fixing member having a shape along the outer peripheral surface is provided on the outer peripheral surface of the cover member to which the fixing member is fixed, so that the fixing member is fixed to the fixing portion. In this case, the force can be applied uniformly over the entire circumferential direction of the outer peripheral portion, so that the adhesion between the surface of the member and the inner peripheral surface of the cover member can be enhanced. Therefore, it is possible to more reliably prevent the surface of the member from being subjected to processing such as coating.
According to one aspect of the present invention, by further including a cover portion that covers the surface of the member, it is possible to prevent paint from entering the inside of the member when the member is submerged in the pool.
According to one aspect of the present invention, the continuous shape of the inner peripheral surface on the cutting plane is a rectangular shape, so that the following effects can be obtained. By the way, there is a structure in which a rectangular tubular column member is covered with a cover member having a rectangular frame-shaped groove, and a clip is used to fix the contact portion between the column member and the cover member. However, in areas not fixed with clips, there is a gap between the surface of the column member and the inner peripheral surface of the cover member, and there is a possibility that the surface of the column member will be painted or otherwise processed. be. On the other hand, according to one aspect of the present invention, even if the continuous shape of the inner peripheral surface on the cutting plane is rectangular, the continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is circular. When the portion is tightened from the outside, the force is evenly applied in the circumferential direction of the outer peripheral portion, so that the surface of the member and the inner peripheral surface of the cover member can be brought into close contact with each other. Therefore, it is possible to reliably prevent the surface of the member from being subjected to processing such as coating. That is, when the continuous shape of the inner peripheral surface on the cutting plane is rectangular, compared with the case where the continuous shape of the inner peripheral surface on the cutting plane is circular, the surface of the member and the inner peripheral surface of the cover member are more likely to be separated. Since it is difficult to adhere to the surface of the member, it is highly practical in terms of reliably preventing processing such as painting on the surface of the member.
According to one aspect of the present invention, the continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is a shape that disperses stress when a load is applied from the outside, so that when the outer peripheral portion is tightened from the outside, the outer peripheral surface Since the stress is not concentrated locally in the portion, the surface of the member and the inner peripheral surface of the cover member can be brought into close contact with each other. Therefore, it is possible to reliably prevent the surface of the member from being subjected to processing such as coating. In addition, the continuous shape of the inner peripheral surface of the outer peripheral portion on the cutting plane is not circular, but the continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is a shape that disperses the stress when a load is applied from the outside. , can be widely applied to cases where the outer peripheral shape of the member is not circular.
According to one aspect of the present invention, the member is pretreated or painted while the surface of the member is covered with the cover member, thereby reliably preventing the surface of the member from being pretreated or painted. can be done.

4 is an exploded perspective view of a cover member and a fixing member according to the embodiment; FIG. It is a perspective view which shows the state which assembled|attached the cover member which concerns on embodiment to the column member. It is a top view of a cover member concerning an embodiment. FIG. 4 is a sectional view along IV-IV in FIG. 3; FIG. 5 is a cross-sectional view corresponding to FIG. 4 of a cover member according to a first modified example of the embodiment; It is a top view of a cover member concerning the second modification of an embodiment. FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6; FIG. 5 is a cross-sectional view corresponding to FIG. 4 of a cover member according to a third modified example of the embodiment; FIG. 10 is a perspective view showing another example of the paint avoidance part of the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, an example in which the cover member of the present invention is applied to a column member constituting a steel frame member will be described. Here, the pillar member corresponds to the "member" described in the claims.

<Column material>
As shown in FIG. 1, the column member 2 has a rectangular tubular shape having a longitudinal direction in one direction. By applying the cover member 1 of the present embodiment, the outer surface of the column member 2 has a portion 20 (hereinafter also referred to as a “coated portion 20”) to which rust prevention coating is applied and a portion 20 to which the coating is not applied. A portion 21 (hereinafter also referred to as “paint avoiding portion 21”) is provided. The paint avoiding portion 21 is provided at the longitudinal end of the column member 2 . In the drawing, reference numeral 2c indicates the central axis of the column member 2 (hereinafter also referred to as "column axis"), and reference numeral 2s indicates the internal space of the column member 2, respectively.

<Cover member>
As shown in FIG. 2, the cover member 1 covers the paint avoiding portion 21 (see FIG. 1) of the column member 2. As shown in FIG. As shown in FIG. 3, the cover member 1 includes an inner peripheral surface 11 in contact with the outer peripheral surface 21f (see FIG. 1) of the paint-repellent portion 21, an outer peripheral portion 12 that retains the shape of the inner peripheral surface 11, and an outer peripheral portion 12. and a lid portion 13 that is continuous with. Here, the outer peripheral surface 21f (see FIG. 1) of the paint avoiding portion 21 corresponds to the "outer peripheral surface of the member portion" described in the claims. As shown in FIG. 2, a fixing member 3 for fixing the outer peripheral portion 12 from the outside is provided on an outer peripheral surface 12f of the outer peripheral portion 12 (hereinafter also referred to as a "cover-side outer peripheral surface 12f").

The cover member 1 is made of an elastic member such as rubber. In the embodiment, the material of the cover member 1 is silicon resin.

The outer shape of the cover member 1 is circular when viewed from the direction along the column axis 2c. In the embodiment, the outer shape of the cover member 1 is substantially a perfect circle. In the drawing, reference numeral 1c indicates the central axis of the cover member 1 (hereinafter also referred to as "cover axis"). In the embodiment, the cover axis 1c coincides with the column axis 2c. Hereinafter, the direction parallel to the cover axis 1c is also called "axial direction", the direction perpendicular to the cover axis 1c is called "radial direction", and the direction around the cover axis 1c is also called "circumferential direction".

As shown in FIG. 3, the cover member 1 has a rectangular (rounded quadrangle) concave portion 10a having rounded corners formed in the radial central portion of one side in the axial direction of a columnar main body portion 10. (see FIG. 4). Here, in the cover member 1, a cutting plane including the inner peripheral surface 11 and the outer peripheral portion 12 is assumed. The cutting plane is a plane obtained by cutting the cover member 1 along an imaginary plane perpendicular to the cover axis 1c. The shape of the cover member 1 on the cutting plane corresponds to the plan view shape of the cover member 1 shown in FIG.

As shown in FIG. 3, the continuous shape of the inner peripheral surface 11 of the cover member 1 on the cutting plane (hereinafter also referred to as "inner peripheral surface shape") is not circular. In the embodiment, the shape of the inner peripheral surface is a rectangular shape with rounded corners (rounded quadrilateral). In other words, the shape of the inner peripheral surface is such that the four corners of the square are curved outwardly in the radial direction. The shape of the inner peripheral surface is substantially the same as the shape of the outer peripheral surface 21f (see FIG. 1) of the paint avoiding portion 21. As shown in FIG.

The continuous shape of the outer peripheral surface 12f of the cover member 1 on the cutting plane (hereinafter also referred to as "outer peripheral surface shape") is circular. In embodiments, the outer peripheral shape is substantially a perfect circle. The diameter 1d of the outer peripheral surface shape is larger than the maximum width 1w of the inner peripheral surface shape. Here, the maximum width 1w of the inner peripheral surface shape means the length of a straight line connecting two diagonal corners.

The outer peripheral portion 12 includes a corner holding portion 15 that holds a corner portion 25 (see FIG. 1) of the paint avoiding portion 21 from the radially outer side, and a side portion 26 (see FIG. 1) of the paint avoiding portion 21 that is radially outwardly supported. and a side holding portion 16 for holding from.

As shown in FIG. 1 , four corner holding portions 15 are provided corresponding to the four corner portions 25 of the paint avoiding portion 21 . The thickness of the corner holding portion 15 is set to withstand the tightening pressure of the fixing member 3 . That is, the thickness of the corner holding portion 15 is made thick so that cracks or the like do not occur when the fixing member 3 is tightened. Here, the thickness of the corner holding portion 15 is the length of the corner holding portion 15 in the radial direction. The thickness of the corner holding portion 15 is the smallest on the extension line of the maximum width 1w of the inner peripheral surface shape. Reference numeral 15t in FIG. 3 indicates the minimum thickness of the corner holding portion 15. As shown in FIG.

In addition, the thickness of the corner holding portion 15 is set to a thickness that can ensure the maximum number of the pillar members 2 when the plurality of pillar members 2 are submerged in the pool in the assembled state of the cover member 1 shown in FIG. ing. That is, the thickness of the corner holding portion 15 is made thin so as to minimize the distance between the two adjacent column members 2 in the assembled state of the cover member 1 shown in FIG.

As shown in FIG. 1 , four side holding portions 16 are provided corresponding to the four side portions 26 of the paint avoiding portion 21 . As shown in FIG. 3, the thickness of the side holding portion 16 is thicker than that of the corner holding portion 15 in the entire circumferential direction. Here, the thickness of the side holding portion 16 is the length of the side holding portion 16 in the radial direction. The thickness of the side holding portion 16 is maximum at the central portion of the side holding portion 16 in the circumferential direction. The central portion of the side holding portion 16 in the circumferential direction corresponds to the midpoint of the side portion 26 (see FIG. 1) of the paint avoiding portion 21 . Reference numeral 16t in FIG. 3 indicates the maximum thickness of the side holding portion 16. As shown in FIG.

As shown in FIG. 1, the lid portion 13 covers the end portion of the paint avoiding portion 21 from the outside in the axial direction. The lid portion 13 continues to the outer peripheral portion 12 . The lid portion 13 and the outer peripheral portion 12 are integrally formed of the same member. In the embodiment, the lid portion 13 and the outer peripheral portion 12 are integrally formed of the same silicone resin.

<Fixing member>
As shown in FIG. 2, the fixing member 3 has an annular shape along the cover-side outer peripheral surface 12f. Specifically, the fixing member 3 includes an annular band portion 30 along the cover-side outer peripheral surface 12f, and a tightening portion 31 that tightens the band portion 30 to the cover-side outer peripheral surface 12f. Here, the portion of the cover-side outer peripheral surface 12f to which the fixing member 3 (band portion 30) is fixed corresponds to the "fixing portion" described in the claims.

For example, the fixing member 3 is a hose clamp. The band part 30 is a metal belt. The tightening portion 31 is connected to both ends of the band portion 30 . In the assembled state of the cover member 1 shown in FIG. Specifically, the tightening portion 31 is provided at the center portion of the outer peripheral surface 16f of the side holding portion 16 in the circumferential direction. As a result, the tightening portion 31 is sufficiently allowed to move inward in the radial direction at the thick portion (the portion including the maximum thickness 16t shown in FIG. 3) of the side holding portion 16 .

As shown in FIG. 1 , the tightening portion 31 includes a bolt 32 and connecting portions 33 that rotatably support the bolt 32 and are connected to both ends of the band portion 30 . For example, by rotating the bolt 32 clockwise, the band portion 30 can tighten the outer peripheral portion 12 from the outside in the radial direction.

<Processing method for column members>
Next, an example of a method for processing the column member 2 will be described.
The method of processing the column member 2 is performed in a state in which the paint avoiding portion 21 of the column member 2 is covered with the cover member 11 .
The method of processing the column member 2 includes a pretreatment step before coating the column member 2, a coating step of coating the column member 2, and a drying step of drying the coated column member 2.

First, the column member 2 is pretreated while the paint avoiding portion 21 is covered with the cover member 1 . That is, pretreatment is performed on the column member 2 (hereinafter also referred to as "cover member assembly 5", see FIG. 2) to which the cover member 1 is assembled. The pretreatment includes a cleaning process for deoiling the pillar member 2, washing with water, etc., and an etching process for roughening the surface of the pillar member 2 after the cleaning process.

Next, the column member 2 is painted. For example, the cover member assembly 5 is submerged in a pool and painted. For example, a plurality of cover member assemblies 5 are collectively immersed in a pool. In one embodiment, the coating is electrodeposition coating.

After that, the column member 2 after coating is dried. For example, a plurality of cover member assemblies 5 are made to flow on a moving line in an atmosphere of high-temperature gas (gas having a temperature higher than room temperature).
By removing the cover member 1 from the column member 2 after drying, the column member 2 in which the paint-repellent portion 21 is not coated can be obtained. That is, it is possible to obtain the column member 2 in which only the coated portion 20 is coated.

As described above, the above embodiment is the cover member 1 that covers the outer peripheral surface 21f of the paint avoiding portion 21, the inner peripheral surface 11 in contact with the outer peripheral surface 21f of the paint avoiding portion 21, and the shape of the inner peripheral surface 11. When a cutting plane including the inner peripheral surface 11 and the outer peripheral portion 12 is assumed, the inner peripheral surface shape is not circular, but the outer peripheral surface shape is circular.
According to this configuration, since the outer peripheral surface shape of the cover member 1 is circular, when the outer peripheral portion 12 is tightened from the outside, a force is evenly applied to the outer peripheral portion 12 in the circumferential direction. and the inner peripheral surface 11 of the cover member 1 can be brought into close contact with each other. Therefore, it is possible to reliably prevent the outer peripheral surface 21f of the paint avoiding portion 21 from being subjected to processing such as painting. The processing includes pretreatment such as cleaning treatment and etching treatment of the column member 2 . In addition, since the inner peripheral surface shape is not circular but the outer peripheral surface shape is circular, it can be widely applied to cases where the outer peripheral shape of the column member 2 is not circular.
In addition, since there is no need to scrape off the paint film adhering to the outer peripheral surface 21f of the paint avoiding portion 21 with a grinder or the like, work efficiency can be improved.
In addition, compared to the case where the outer peripheral surface 21f of the paint avoiding part 21 is covered with masking tape, it is not necessary to wind the masking tape or remove it after painting, so workability can be improved. Moreover, it is preferable because it does not affect the skill of the operator.
In addition, compared to the case of fixing the cover member with a clip, it takes less time and effort, so workability can be improved.
By the way, it is necessary to reliably prevent local deterioration of strength due to rust or the like in steel members that construct the structural frame of a building. For this reason, the surface of the steel frame member is coated with an antirust coating. Such coating must be applied to the entire surface of the steel frame member. For example, when welding two steel frame members, if each welded portion is painted, the two steel frame members may not be welded together. On the other hand, according to this configuration, it is possible to reliably prevent the welded portion (the paint avoiding portion 21) of the steel frame member from being painted, so that the two steel frame members can be welded.

In the above-described embodiment, the fixing member 3 is fixed to the fixing member 3 by providing the fixing member 3 having a shape along the cover-side outer peripheral surface 12f on the cover-side outer peripheral surface 12f. In this case, force can be applied uniformly over the entire circumferential direction of the outer peripheral portion 12, so that the adhesion between the outer peripheral surface 21f of the paint repellent portion 21 and the inner peripheral surface 11 of the cover member 1 can be enhanced. Therefore, it is possible to more reliably prevent the outer peripheral surface 21f of the paint avoiding portion 21 from being subjected to processing such as painting.

Further, in the above-described embodiment, the lid portion 13 that covers the surface of the column member 2 is further provided, so that when the cover member assembly 5 is submerged in the pool, the paint is applied to the inside of the column member 2 (internal space 2s). can be prevented from entering.

In addition, in the above-described embodiment, since the material of the cover member 1 is silicone resin, workability is superior to the case where the material of the cover member 1 is fluororubber. In addition, the heat resistance is excellent as compared with the case where the cover member 1 is made of urethane rubber. In addition, the chemical resistance (specifically, resistance to organic acids, high-concentration alkalis, and low-concentration alkalis) is excellent compared to the case where the material of the cover member 1 is urethane rubber.

Moreover, in the above embodiment, the rectangular shape of the inner peripheral surface provides the following effects. By the way, there is a structure in which a rectangular tubular column member is covered with a cover member having a rectangular frame-shaped groove, and a clip is used to fix the contact portion between the column member and the cover member. However, in areas not fixed with clips, there is a gap between the surface of the column member and the inner peripheral surface of the cover member, and there is a possibility that the surface of the column member will be painted or otherwise processed. be. On the other hand, according to this configuration, even if the shape of the inner peripheral surface is rectangular, the shape of the outer peripheral surface is circular. Since the force is evenly applied, the outer peripheral surface 21f of the paint avoiding portion 21 and the inner peripheral surface 11 of the cover member 1 can be brought into close contact with each other. Therefore, it is possible to reliably prevent the outer peripheral surface 21f of the paint avoiding portion 21 from being subjected to processing such as painting. That is, when the shape of the inner peripheral surface is rectangular, the outer peripheral surface 21f of the paint-repellent portion 21 and the inner peripheral surface 11 of the cover member 1 are brought into closer contact than when the shape of the inner peripheral surface is circular. Therefore, it is very practical to prevent the outer peripheral surface 21f of the paint-repellent portion 21 from being painted or otherwise processed.

Further, in the above-described embodiment, since the tightening portion 31 is provided on the outer peripheral surface 16f of the side holding portion 16, the side holding portion 16, which is thicker than the corner holding portion 15, can receive the tightening portion 31. , the durability of the corner holding portion 15 can be maintained.

In the above-described embodiment, the thickness of the corner holding portion 15 is made thin so that the distance between two adjacent pillar members 2 becomes small when the cover member 1 is assembled. 2 can be submerged in the pool, the maximum number of column members 2 can be ensured. Moreover, the temporary storage space for the plurality of column members 2 (cover member assembly 5) can be made as small as possible.

Further, in the above-described embodiment, the outer peripheral surface 21f of the paint avoiding portion 21 is pretreated by performing pretreatment and painting on the column member 2 while the outer peripheral surface 21f of the paint avoiding portion 21 is covered with the cover member 1. It is possible to reliably prevent the coating from being applied or painted.

<Modification>
Modifications of the embodiment will be described below. In addition, in the following description, the same reference numerals are given to the same configurations as in the above-described embodiment, and the description thereof is omitted.
In the above-described embodiment, an example in which the outer peripheral surface shape of the cover member 1 is substantially a perfect circle has been described, but the shape is not limited to this. For example, the shape of the outer peripheral surface may be an ellipse or a polygon such as a regular 24-sided polygon. That is, the shape of the outer peripheral surface may be any shape that disperses the stress when the outer peripheral portion 12 receives a load from the outside. As a result, when the outer peripheral portion 12 is tightened from the outside, stress is not concentrated locally on the outer peripheral portion 12, so that the outer peripheral surface 21f of the paint avoiding portion 21 and the inner peripheral surface 11 of the cover member 1 can be brought into close contact. . Therefore, it is possible to reliably prevent the outer peripheral surface 21f of the paint avoiding portion 21 from being subjected to processing such as painting. For example, the shape of the outer peripheral surface is preferably such that the stress when the outer peripheral portion 12 receives a load from the outside is distributed evenly in the circumferential direction with respect to the outer peripheral surface 21f of the paint repelling portion 21 .

Further, in the above-described embodiment, an example in which the inner peripheral surface shape of the cover member 1 is rectangular has been described, but the shape is not limited to this. For example, the shape of the inner peripheral surface may be a polygon such as a triangle, a pentagon, a rhombus, and a trapezoid. In other words, the shape of the inner peripheral surface may be any shape that is not circular. Alternatively, the shape of the inner peripheral surface may be different from the shape of the outer peripheral surface.

Moreover, although the said embodiment gave and demonstrated the example which the cover member 1 was provided with the cover part 13 which covers the column member 2, it does not restrict to this. For example, the cover member 1 may not have the lid portion 13 . For example, as shown in FIG. 5, the cover member 101 is formed with a rectangular (rounded square) opening 10h opening in the axial direction at the radially central portion of the cylindrical main body 10. may
Alternatively, as shown in FIG. 6, the cover member 201 is formed with a rectangular (rounded square) opening 10i that opens in the axial direction at the radially central portion of the cylindrical main body 10, and also has an opening 10i. A rectangular frame-shaped concave portion 10m may be formed on the radially outer side of the portion 10i. In other words, as shown in FIG. 7, the cover member 201 extends radially inward from the end portion in the axial direction of the outer peripheral portion 12 and then bends and extends axially inward to form the paint avoiding portion 21 (see FIG. 7). 1) from the radially inner side.

Moreover, although the said embodiment gave and demonstrated the example which the cover part 13 continues in a row with the outer peripheral part 12, it does not restrict to this. For example, the lid portion 13 may not be continuous with the outer peripheral portion 12 and may be separate from the outer peripheral portion 12 .

Moreover, although the said embodiment gave and demonstrated the example which the fixing member 3 is provided in 12 f of cover side outer peripheral surfaces, it does not restrict to this. For example, as shown in FIG. 8, an annular guide groove 12m may be formed in the cover-side outer peripheral surface 12f, and the fixing member 3 (see FIG. 1) may be provided in the guide groove 12m. As a result, the fixing member 3 can be prevented from shifting in the axial direction, so that the cover member 301 can be stably fixed by the fixing member 3 .

Further, in the above-described embodiment, an example in which the material of the cover member is silicone resin has been described, but the present invention is not limited to this. For example, the material of the cover member may be other materials such as natural rubber, nitrile rubber, ethylene-propylene rubber, chloroprene rubber, urethane rubber, and fluororubber.

In addition, in the above embodiment, an example in which the coating is dip coating such as electrodeposition coating has been described, but the present invention is not limited to this. For example, the coating may be another coating such as spray coating.

Moreover, although the said embodiment gave and demonstrated the example which the fixing member 3 is a hose clamp, it does not restrict to this. For example, the fixing member 3 may be a binding band, a rubber band or an annular spring. In other words, the fixing member 3 may have an annular shape along the outer peripheral surface 12f on the cover side.

Moreover, although the said embodiment gave and demonstrated the example which the column member 2 has comprised the rectangular cylinder shape which has a longitudinal direction in one direction, it does not restrict to this. For example, the pillar member 2 may have a rectangular pillar shape. That is, the column member 2 may have a solid structure instead of a hollow structure.

Further, in the above-described embodiment, an example in which the paint avoiding portion 21 is provided at the longitudinal end portion of the column member 2 has been described, but the present invention is not limited to this. For example, as shown in FIG. 9 , the paint avoiding portion 21 may be provided on a projecting portion 6 projecting radially outward from a portion of the column member 2 .

Moreover, although the said embodiment gave and demonstrated the example which applied the cover member 1 to the column member 2 which comprises a steel-frame member, it does not restrict to this. For example, the cover member 1 may be applied to members constituting metal members other than steel frame members. Also, the cover member 1 may be applied to various members other than the steel column.

Moreover, although the said embodiment gave and demonstrated the example which is a welding part when the paint-repellent part 21 welds two steel-frame members, it does not restrict to this. For example, the paint avoiding part 21 may be a fastening part (joint part) when the contact surfaces of two steel frame members are fastened together with fasteners such as bolts.

The configuration in the above embodiment is an example of the present invention, and various modifications, such as replacing the constituent elements of the embodiment with known constituent elements, are possible without departing from the gist of the present invention.

1, 101, 201, 301... Cover member 1c... Cover axis line 1d... Diameter of outer peripheral surface shape 1w... Maximum width of inner peripheral surface shape 2... Column member (member)
2c... Column axis 2s... Internal space 3... Fixed member 5... Cover member assembly 6... Protrusion 10... Body part 10a... Recess 10h... Opening 10i... Opening 11... Inner peripheral surface 12... Outer peripheral part 12f... Cover side outer peripheral surface (outer peripheral surface of the outer peripheral part)
12m... Guide groove 13... Lid part 14... Extension part 15... Corner holding part 16... Side holding part 16f... Outer peripheral surface of side holding part 16t... Maximum thickness of side holding part 20... Painted part 21... Paint avoidance part 21f... Outer peripheral surface of paint avoidance part (surface of member)
DESCRIPTION OF SYMBOLS 25... Corner part 26... Side part 30... Band part 31... Fastening part 32... Bolt 33... Connection part

Claims (5)

A cover member that is attached to a portion of a member whose continuous shape of the outer peripheral surface in the cutting plane is a polygon and covers the outer peripheral surface of the member portion in order to prevent pretreatment or processing including painting. There is
an inner peripheral surface in contact with the entire outer peripheral surface of the portion of the member;
and an outer peripheral portion that retains the shape of the inner peripheral surface,
Assuming a cutting plane that includes the inner peripheral surface and the outer peripheral portion,
The continuous shape of the inner peripheral surface on the cutting plane is the same as the continuous shape of the outer peripheral surface on the cutting plane of the member portion,
The cover member, wherein the continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is circular. A cover member that is attached to a portion of a member whose continuous shape of the outer peripheral surface in the cutting plane is a polygon and covers the outer peripheral surface of the member portion in order to prevent pretreatment or processing including painting. There is
an inner peripheral surface in contact with the entire outer peripheral surface of the portion of the member;
and an outer peripheral portion that retains the shape of the inner peripheral surface,
Assuming a cutting plane that includes the inner peripheral surface and the outer peripheral portion,
The continuous shape of the inner peripheral surface on the cutting plane is the same as the continuous shape of the outer peripheral surface on the cutting plane of the member portion,
The continuous shape of the outer peripheral surface of the outer peripheral portion on the cutting plane is a shape that disperses stress when the outer peripheral portion receives a load from the outside , and is either an elliptical shape or a polygonal shape. cover member. 3. The cover member according to claim 1, wherein the outer peripheral surface of the outer peripheral portion is provided with a fixing portion to which a fixing member having a shape along the outer peripheral surface of the outer peripheral portion is fixed. 4. The cover member according to any one of claims 1 to 3, further comprising a lid portion that is continuous with the outer peripheral portion. A member processing method using the cover member according to any one of claims 1 to 4,
A method of processing a member, wherein the member is pretreated or painted while the outer peripheral surface of the member is covered with the cover member.

Images