JPH0641661Y2 - Coating preventive cover for H-section steel - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a paint adhesion prevention cover used for preventing paint from adhering to an end portion of an H-section steel when painting the H-section steel.

[Prior art]

Generally, H-section steel used as a building steel material is processed to a predetermined size in a factory, and after being subjected to processing such as drilling as necessary, it is painted for rust prevention using a compressor and a spray gun. Is performed. At the time of this coating, the end of the H-shaped steel is joined to another steel material, so it is necessary to secure a non-coated portion. Conventionally, in order to secure an unpainted portion at the end of the H-shaped steel, a piece of gum tape or the like is attached to the end of the H-shaped steel for coating, and after painting, the gum tape or the like is peeled off to form an unpainted portion, or A protective box for covering the H-shaped steel end portion with a galvanized sheet was formed by sheet metal working, and at the time of painting, the protective box was attached to the H-shaped steel end portion to form an unpainted portion.

[Problems to be solved by the device]

However, the formation of the non-painted portion by the conventional gum tape or the like requires precise sticking work in order to accurately form the boundary of the non-painted portion, and it is necessary to form the border by cutting the gum tape with a cutter. there were. Therefore, there was a risk of injury with the cutter. Further, after coating, the gum tape and the like are peeled off, but this peeling must be done carefully so that the adhesive of the tape does not remain on the H-section steel. In this way, the formation of non-painted parts such as gum tape not only makes the work complicated and time-consuming for craftsmen, but it is impossible to reuse the peeled tape,
There was a drawback that the cost was high. Moreover, the formation of the unpainted part by the protective box of the galvanized iron plate can be used several times, but it is expensive because of the sheet metal processing, and if it is handled roughly, it will be deformed and unusable, and the metal Since it is manufactured, it has a drawback that it is heavy and not easy to use. Further, when the protective box is new, it is handled with care, but with the increase in the number of times of use, it has a drawback that it is roughly treated with paint and easily damaged. In order to solve the above-mentioned drawbacks, the applicant of the present application has an outer cover and an inner cover made of a synthetic resin material in order to solve the above-mentioned drawbacks. Both covers include a back plate and a pair of side plates. Is formed into a box-like shape that is open in three directions and has a U-shaped cross section, and has a space into which the web at the end of the H-shaped steel can be inserted.
As for the inner cover, a coating adhesion preventing cover for H-section steel is proposed in which the protruding length from the outer cover is freely set in the outer cover. The coating adhesion prevention cover for H-section steel according to this proposal is made of synthetic resin and is configured to be attached to the unpainted portion of the H-section steel web, so that the boundary of the unpainted surface can be accurately formed simply by attaching the cover. Further, since the length can be appropriately adjusted and attached according to the width of the web, and the web can be easily removed, it is extremely easy to use. Further, since the cover has no deformation and is durable, it can be used repeatedly, resulting in low cost. Furthermore, when the back plate of each cover is provided with an ear piece, the ear piece can be used as a clue for easy length adjustment and removal. And the like. However, the structure that slidably supports the inner and outer covers for adjusting the length of the cover according to the length of the H-shaped steel web is complicated, the manufacture is not easy, and the manufacturing cost is high. There is a problem that the connection state of both covers in the extended state is uncertain and the connection strength is low. The present invention has been made to solve the above problems, and is composed of an outer cover and an inner cover made of a synthetic resin material, both covers having a back plate and a pair of side plates and having a substantially U-shaped cross section. Is formed in a box-like shape that is open on three sides, and has a space into which the web at the end of the H-shaped steel can be inserted, and the inner cover freely sets the protruding length from the outer cover in the outer cover. With the paint adhesion prevention cover for H-shaped steel that can be inserted as much as possible, the structure for supporting the inner cover on the outer cover can be manufactured easily and inexpensively, and the connection state is stable and stable even when the cover is extended. It is an object of the present invention to provide a paint adhesion prevention cover for H-section steel that does not deteriorate.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the H-shaped steel coating adherence prevention cover according to the present invention is provided with locking edges extending over the entire length inside the tip portions of both side plates of the outer cover, and the inner cover is a back plate. It is characterized in that it is brought into contact with the inner wall surface of the back plate of the outer cover, and the tip portion of the side plate of the inner cover is engaged with the locking edge of the outer cover.

[Action]

In the above structure, in the space portion of the outer cover and the inner cover,
A web of H-section steel can be pushed in and its cover mounted on the end of the H-section steel. The inner cover is slidable in the longitudinal direction with respect to the outer cover and can be expanded and contracted, and the length of the cover can be adjusted according to the width of the H-section steel web. Since the back plate of the inner cover is in contact with the inner surface of the back plate of the outer cover and the leading end of the side plate is in contact with and engages with the locking edges provided inside the leading end of the side plate of the outer cover, the inner cover is in an extended state. Also has high stability and high connection strength.

【Example】

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an H-shaped steel paint adhesion preventive cover (hereinafter, simply referred to as a cover) A according to the present invention is an outer cover 1.
And an inner cover 2. The cover 1 is made of a synthetic resin material, and a force can be applied to the side plate 1b to make the distance between the tip ends of the side plate 1b larger than the thickness of the web 6b, and the cover can be restored by removing the force. The outer cover 1 integrally has a strip-shaped back plate 1a and rectangular side plates 1b extending in the same direction from both ends of the back plate,
It is formed into a substantially U-shaped cross section, and has a space portion 1c which is open in three directions. As shown in FIG. 6, the space portion 1c is provided for inserting the end portion of the web 6a of the H-shaped steel 6 so that the outer cover 1 can be mounted and held on the end portion of the H-shaped steel web. It is a thing. The distance between the tip portions of the side plates 1b of the outer cover is set to be slightly smaller than the thickness of the web 6b so that the web is retained without falling after being inserted. The cover 1 is made of a synthetic resin material, and the side plate 1b
A force can be applied to increase the distance between the tips of the side plates 1b beyond the thickness of the web 6b, and the force can be removed to restore the space. The depth of the space 1c matches the width of the unpainted part. The inner cover 2 is made of the same material as the outer cover 1 and has substantially the same shape and structure. The members corresponding to the respective parts of the outer cover 2 of the inner cover 1 are indicated by the symbols having the same alphabetical character 2 attached thereto. The depth dimension of the space 2c of the cover 2 also matches the width dimension of the unpainted portion. Then, the inner cover 2 is inserted inside the space 1c of the outer cover 1 with both back plates 1a, 2a and side plates 1b, 2b adjacent to each other, and slides in a direction parallel to the surfaces of those plates. Then, the amount of protrusion of the inner cover 2 from the outer cover 1 is adjusted to allow expansion and contraction of the entire length of both covers. The reason why the total length of both covers 1 and 2 can be expanded and contracted to an arbitrary length in this way is that H-shaped steels of different sizes may be used depending on the construction work, so depending on the width of the H-shaped steel web. This is so that the length of the cover A can be adjusted. Since the inner cover 2 is slidably held in the outer cover 1,
Locking edge protruding inside the tip of both side plates 1b of the outer cover 1
1d is formed on the entire length of the side plate 1b of the cover, and the inner cover 2 brings its back plate 2a into contact with the inner surface of the back plate 1a of the outer cover 1,
Moreover, the tip of the side plate 2b of the inner cover 2 is brought into contact with the locking edge 1d. After inserting the web 6a of the H-shaped steel 6 into the spaces 1c and 2c of the inner and outer covers 1 and 2 and mounting the cover, the inner cover 2 is moved to adjust the length of the cover A according to the width of the web. In order to facilitate this, ear pieces 3 and 4 that can be held by hand are provided outside the back plates 1a and 2a of the inner and outer covers 1 and 2, respectively. When these ear pieces are provided with the holes 3a and 4a, it is possible to easily move them by applying a large force by passing a finger through the holes. FIG. 6 shows a state in which the cover A having the above structure is attached to the H-shaped steel 6. After the cover A is attached to the end portion of the H-shaped steel web 6a in this way, the H-shaped steel is painted to form the unpainted portion. In FIG. 6, B is a cover separately proposed by the present inventor for forming an unpainted portion on the flange 6b of the H-shaped steel end portion. The cover B is made of synthetic resin and integrally molded in a box shape. Inside the cover B, a space is provided in which one end of the flange 6b of the H-shaped steel 6 can be stored. Therefore, the width of the space is substantially the same as the width of the flange 6b, the height is substantially the same as the thickness of the flange, and the depth is equal to the length of the unpainted portion of the flange. One end surface of the cover B is opened so that the flange 6b can be inserted, and the opposite surface of the cover B is opened so that the web 6a can be inserted. Reference numeral 5 is an ear piece similar to the ear pieces 3 and 4, and has a hole 5a. After mounting the cover A and the cover B on the unpainted portion of the H-shaped steel 6, painting is performed. At this time, in the covers A and B, non-painted portions are formed in order to prevent the paint sprayed from the spray gun from adhering to the H-shaped steel 6. Moreover, in the outer cover 1, the locking edge 1d is the web.
Since it is in close contact with 6a, the paint is effectively prevented from entering the space 1c, and in the inner cover 2, the tip of the side plate 2b is in close contact with the web 6a, so that the space for paint is Part 1c
Since it effectively blocks entry into the ground, it remains completely unpainted. After the painting is completed, cover A and cover B are ears 3,4,5
Is pulled out as a clue. The pulled out covers A and B are through holes 3a, 4a, 5 provided in the ear pieces 3, 4, 5.
It is stored by hooking a on a hook or the like. Since the cover A according to the present embodiment is configured to be attached to the non-painted portion of the H-shaped steel 6 with the synthetic resin, the boundary of the non-painted surface can be accurately formed only by attaching the cover A. In addition, since the space between the tips of the inner and outer covers is slightly smaller than the thickness of the H-shaped steel web, they are held in that position only by mounting or even after adjusting the length of the cover. It is possible to effectively prevent the paint from entering the unpainted part. In addition, since it can be easily removed, it can be made extremely easy to use. Further, since the cover A is not deformed and has excellent durability, it can be repeatedly used, so that there is an effect of reducing the cost. Furthermore, since the earpieces 3 and 4 are provided on the back plate of the inner and outer covers, the total length of the cover can be changed to H by moving using the earpieces.
It can be easily adjusted according to the width of the section steel web. Further, the ear piece can be easily removed by using this as a clue, and furthermore, it can be stored by being hooked on a hook or the like by utilizing the holes provided in the ear pieces 3 and 4. Further, the inner cover holds the back plate slidably by abutting the back plate on the inner surface of the back plate of the outer cover and the tip end of the side plate of the inner cover by abutting the locking edge of the outer cover. Since the length of the cover can be smoothly adjusted, and the inner cover is locked to the outer cover at the tip of the back plate and the side plate even in the extended state, the stability is high and the connection strength is high. Even if the locking edge 1d is bent at a right angle to the side plate without returning to the direction of the back plate, the same effect can be obtained. It is also possible to change the insertion amount of the cover A into the H-shaped steel 6 and appropriately select the boundary of the unpainted portion. Since the cover is made of synthetic resin, it is possible to easily provide chemical resistance and stain resistance by selecting a resin that is not exposed to thinner or acetone contained in the paint or a resin to which the paint does not adhere easily.

[Effect of device]

Since the cover according to the present invention is made of synthetic resin and attached to the unpainted portion of the H-section steel web, the boundary of the unpainted surface can be accurately formed simply by attaching the cover.
The length of the web can be appropriately adjusted according to the width of the web, and the web can be easily attached and detached. Therefore, it is extremely easy to use. Further, since the cover is not deformed and has durability, it can be repeatedly used, so that the cost can be reduced. Further, a locking edge extending over the entire length is provided inside the tip portions of both side plates of the outer cover, and the inner cover makes its back plate abut against the inner wall surface of the back plate of the outer cover, and Since the front end of the side plate of the inner cover is engaged with the locking edge of the outer cover, the expansion and contraction of the cover can be performed smoothly, and even when the inner cover is pulled out from the outer cover and extended, High stability of holding the outer cover and high connection strength.

[Brief description of drawings]

FIG. 1 is a perspective view of a cover according to the present invention, FIG. 2 is a perspective view showing a state in which the inner cover is stretched to change the length of the cover, and FIG. 3 is a perspective view of the same thing seen from the opposite side. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a sectional view taken along line VV in FIG. 2, and FIG. 6 is a perspective view showing a state of being mounted on H-section steel. A ... cover, 1 ... outer cover, 1a ... back plate, 1b ... side plate, 1c ... space part, 1d ... locking edge, 2 ... inner cover, 2a ... back plate, 2b ... side plate, 2c ... space part, 3, 4 ... Ear piece, 3a, 4a ... Hole, 6 ... H-shaped steel, 6a ... Web, 6b ... Flange.

Claims (1)

[Scope of utility model registration request] 1. An outer cover and an inner cover made of a synthetic resin material. Both covers integrally form a strip-shaped back plate and rectangular side plates extending in the same direction from both ends of the back plate. And a space portion for inserting the web of the end portion of the H-shaped steel, which is open in three directions having a substantially U-shaped cross section, and in which a pair of side plates and a back plate of the inner cover are arranged to form a pair of side plates of the outer cover. A coating attachment prevention cover for H-section steel, wherein the inner cover is inserted into the outer cover so that the protruding length from the outer cover can be freely set so as to overlap the side plate and the back plate, respectively. A locking edge extending over the entire length is provided inside the tip portions of both side plates, the inner cover makes the back plate abut against the inner wall surface of the back plate of the outer cover, and the tip portions of the side plates of the inner cover. Is engaged with a locking edge of the outer cover. A paint adhesion prevention cover for H-section steel.