JP2013096467A - Elbow protective cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elbow protective cover for enhancing the resources-saving effect by minimizing a plate material use quantity of a binding member in the elbow protective cover.SOLUTION: This elbow cover 10 includes an elbow body part 20 and an elbow binding part 30. The elbow body part 20 covers a bending part of a pipe body, and the elbow binding part 30 is constituted by arranging a male type binding member 31 and a female type binding member 32 in a pair in an opening part of the elbow body part 20 so as to face each other. A plurality of engaging projections 310 are arranged in the male type binding member 31, and a plurality of pairs of engagement receiving holes 320 corresponding to the projections 310 are arranged in the female type binding member 32. The female type binding member 32 is formed with a reinforcing member 33 for enhancing strength of the female type binding member 32. The elbow cover 10 is installed by extracting the elbow binding part 30 to the bending part of the pipe body covered with a heat reserving material, and both are bound by pressing the engaging projections 310 of the male type binding member 31 in the engagement receiving holes 320 of the female type binding member 32.

Description

  The present invention relates to a protective cover for protecting a heat insulating material coated on the surface of a tubular body that supplies cold air or warm air, and more specifically, elbow protection that is attached to a bent portion where the tubular body is bent at a right angle. It is about the cover.

  An apparatus for binding the binding portions of the elbow cover to each other is disclosed in Patent Document 1 and Patent Document 2 below.

  The elbow cover described in Patent Document 1 is fitted with one of the connecting portions (24, 26) provided in a pair at the end of the outer curved portion (18) folded in three. A groove (28) is formed, and the other connecting portion (26) is provided with a pocket-shaped convex portion (32). When the elbow cover is assembled, the pocket-shaped convex portion ( 32) is inserted and engaged with the insertion groove (28) of the connecting portion (24) to couple them together.

  Since the elbow cover of Patent Document 1 can be coupled to the elbow cover simply by fitting the pocket-shaped convex part (32) of the joint part (26) into the fitting groove (28) of the joint part (24), Although it is possible to improve the work efficiency of the joining work compared with the cover so far, the thickness is generated to form the fitting groove (28) in the connecting portion (24). When the tube is attached to the tube body, the corners at the tip of the fitting groove (28) are only in close contact with the inner diameter of the heat insulating material coated on the tube body. There was a problem that prevented it.

  Moreover, in the elbow cover of patent document 1, since all the junction parts formed in the connection part (24) of the cover are formed in the same width, the intensity | strength of a junction part is maintained, Since the portion (24) is formed by folding in three, the connecting portion (24) requires more plate material than the other connecting portion (26) by the amount of the folded portion, and is proposed in Patent Document 1. The elbow cover was hard to say that it was resource-saving.

  On the other hand, the elbow cover described in Patent Document 2 is provided with an outer diameter cover body (1) that covers the outer diameter surface of the bent portion of the tube body and an inner diameter cover body (2) that covers the inner diameter surface of the bent portion of the tube body. The inner diameter cover body (2) has a first inner diameter cover body (2a) and a second inner diameter cover body (2b), and the first inner diameter cover body (2a) has its end folded inward. A secondary bent portion (7) formed by bending, and a secondary portion formed by folding an extended portion from the primary bent portion (7) outward in the middle and facing the primary bent portion (7). A bent portion (8), a V-shaped groove portion (11) formed between the secondary bent portion (8) and the primary bent portion (7), and a secondary bent portion (8). And the second inner diameter cover body (2b) is formed at the end so as to be freely engageable with the engagement tooth (9). With engaging teeth (11) The side edge of the primary bent part (7) is positioned inwardly facing the side edge of the inner diameter cover body (2) in a substantially tapered shape, and the side edge of the secondary bent part (8) is The first inner diameter cover body (2a) and the second inner diameter cover body (2b) were connected to each other by being positioned inwardly facing the side edge of the primary bent portion (7) in a substantially tapered shape. A state in which the side edge is closely attached to the inner diameter surface of the tubular body by configuring the thickness of the engagement connecting portion formed from time to time to gradually decrease from the center to the side edge. The thickness of the engagement connection portion of the first and second inner diameter cover bodies (2a, 2b) is formed so as to gradually become thinner from the central portion toward the side edge portion. There is a characteristic in composition.

  Since the elbow cover of Patent Document 2 is formed so that the width of the female engagement portion (3a) constituting the engagement connection portion gradually narrows toward the free end with reference to FIG. When the engagement connecting portion is bent, the thickness can be gradually reduced from the central portion toward the side edge, and the inner diameter cover body (2a, 2b) when the cover body is attached to the tube bending portion. As a result, the thickness of the engaging connection portion is gradually reduced from the center portion toward the side edge portion. In this case, there is a problem that a portion of the plate member is formed at the side edge of the female engagement portion (3a) as the engagement connection portion, and the strength of the engagement connection portion (3) is lowered. Has occurred.

  Further, the elbow cover of Patent Document 2 is formed by folding the end portion of the inner diameter cover body (2a) having the female engagement portion (3a) serving as the engagement connection portion, and in this case as well, the first implementation is also performed. Similarly to the example, the inner diameter cover body (2a) having the female engagement portion (3a) by the amount of the three-fold formation is more plate material than the inner diameter cover body (2b) serving as the male engagement portion (3b). This also has the problem of lacking the resource saving effect.

Japanese Utility Model Publication No. 4-64692 JP 2008-95747 A

  The problem to be solved by the present invention is to reduce as much as possible the amount of plate material used by the female binding member constituting the binding portion when the binding portion of the elbow cover has a male binding member and a female binding member. Thus, it is to provide an elbow protective cover that can enhance the resource saving effect while maintaining a certain strength.

  The first of the solving means is that the elbow cover has an elbow body part and an elbow binding part, and these members are formed of an iron plate or the like, and the elbow body part is bent by a plurality of strip-shaped members. The elbow binding portion is provided with a pair of a male binding member and a female binding member facing each other at the opening of the elbow body portion. An engaging protrusion is provided in the vicinity of the free end of the male binding member, a plurality of pairs of engagement receiving holes corresponding to the engaging protrusion are provided in the female binding member, and a reinforcing member is provided in the female binding member. The elbow body is put on the outside of the bent part of the tube, the elbow binding part is pulled out to the bent part of the tube, and an elbow cover is attached. The mating protrusion is press-fitted into the engagement receiving hole of the female binding member to It is characterized in that bundle.

  A second solving means is characterized in that, in the first solving means, the reinforcing member of the female binding member is a reinforcing plate material obtained by folding the free end of the female binding member.

A third solving means is characterized in that, in the first solving means, the reinforcing member of the female binding member is a reinforcing rib member formed along the engagement receiving hole of the female binding member. is there.
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  According to a first aspect of the present invention, the elbow binding portion of the elbow cover is provided as a pair with the male binding portion and the female binding portion facing each other, and an engaging protrusion is provided on the male binding portion, and the female binding portion is provided on the female binding portion. Since a plurality of pairs of engagement receiving holes corresponding to the engagement protrusions are provided, the thickness of the bundling portion is reduced as compared with a conventional cover having a structure in which the elbow bundling portion is folded in three. When the elbow cover is attached to the inside of the bent part of the tube body, both ends of the bottom of the bundling part can be brought into close contact with the straight tube cover, so that the elbow cover can be attached to the tube body with good appearance. This is an effect.

  Moreover, since the female type | mold binding part of the elbow binding part is not what was folded back and formed in the trifold of the conventional structure, the amount of board materials of a female type binding part can be reduced as much as possible. The elbow bundling portion has a resource saving effect while maintaining strength as a cover.

  Since the reinforcing member of the female binding part is a reinforcing plate material formed by folding the free end of the binding member, the elbow binding part can not only maintain the strength as a cover, The bundling portion has an effect that a resource saving effect can be obtained because the amount of the plate material used may be small as compared with a joint portion formed in a tri-fold with a conventional structure.

  Since the reinforcing member of the female binding part is a reinforcing rib member formed on the binding member, the elbow binding part can maintain the strength as an elbow cover, and the plate material of the female binding part Since it is a single plate, the amount of plate material used is not only when compared with the joint portion formed in a tri-fold of the conventional structure, but also when compared with the female binding portion according to claim 2 proposed by the present invention. There is an effect that the resource saving effect can be obtained with less. Further, since the female binding part is composed of a single plate, there is an effect that the workability is excellent as compared with the conventional structure.

The perspective view which shows the whole elbow cover which concerns on this invention. The side view which shows the state which mounted | wore the pipe body with the elbow cover which concerns on this invention. The perspective view which shows the elbow binding part in the elbow cover of 1st Example. The elbow binding part of 1st Example is shown, A is sectional drawing which shows a male type | mold binding part, B is sectional drawing which shows a female type | mold binding part, C is sectional drawing which shows the state bound. Sectional drawing which shows the combined state of the elbow binding part when the elbow cover in 1st Example is mounted | worn with a pipe. The perspective view which shows the elbow binding part in the elbow cover of 2nd Example. The elbow binding part of 2nd Example is shown, A is sectional drawing which shows a male type | mold binding part, B is sectional drawing which shows a female type | mold binding part, C is sectional drawing which shows the state bound. Sectional drawing which shows the combined state of an elbow binding part when the elbow cover in 2nd Example is mounted | worn with a pipe.

  1 and 2, reference numeral 1 denotes a tube body that supplies cold air or warm air, 2 denotes a heat insulating material that is coated on the surface of the tube body 1, and 3 denotes a heat insulating material 2 that covers the straight pipe portion of the tube body 1. The attached straight pipe cover is shown. In addition, 10 has shown the elbow cover which concerns on this invention, and is mounted | worn from on the heat insulating material 2 which coat | covered the bending part of the pipe body 1. FIG.

  Reference numeral 10 denotes an elbow cover, 20 denotes an elbow body part, and 30 denotes an elbow binding part, both of which are formed of an iron plate or the like. Here, the elbow body portion 20 is formed in a U-shaped cross section that can cover the bent portion of the tubular body by a plurality of strip-shaped members, and the elbow binding portion 30 is formed at the opening of the elbow body portion 20. The male binding member 31 and the female binding member 32 are provided as a pair so as to face each other. The fixing of the members of the elbow body 20 and the fixing of the male binding member 31 and the female binding member 32 as the elbow body 20 and the elbow binding part 30 are performed by welding or caulking.

  The elbow binding portion 30 is provided as a pair, one of which is a male binding member 31 and the other of which is a female binding member 32. Of these, the male binding member 31 has two engagements. The protrusion 310 is provided in the vicinity of the free end and orthogonal to the longitudinal direction, and the other female binding member 32 is provided with a plurality of pairs of engagement receiving holes 320 corresponding to the engagement protrusion 310. ing.

  The female binding member 32 is formed with a reinforcing member 33 for maintaining the strength. Although details of the reinforcing member 33 will be described later, one is a reinforcing plate member 330a obtained by folding the free end of the female binding member 32 (see FIG. 3), and the other is an engagement receiving member of the female binding member 32. This is a reinforcing rib member 330b formed along the hole 320 (see FIG. 6).

  The engagement protrusion 310 and the engagement receiving hole 320 are formed by a so-called snap button structure, and the engagement protrusion 310 corresponds to a male shape of a snap button, and the engagement receiving hole 320 is a snap button. It corresponds to the female type. Here, the male binding member 31 and the female binding member 32 are joined by press-fitting the engagement protrusion 310 into the engagement receiving hole 320 to couple them together.

  The engagement protrusion 310 has an engagement shaft portion 310a and an engagement head portion 310b, which are integrally formed from the male binding member 31, and the diameter of the engagement head portion 310b is the engagement shaft. The diameter is slightly larger than the diameter of the portion 310a. In addition, the engagement receiving hole 320 is provided with one or a plurality of cuts 320 a at the peripheral edge of the engagement receiving hole 320 in order to assist the press-fitting of the head of the engagement protrusion 310.

  The elbow cover 10 according to the present invention is attached to the surface of the heat insulating material 2 that covers the bent portion of the tubular body 1. Prior to mounting the elbow cover 10, the straight tube cover 3 is mounted on the surface of the heat insulating material 2 covered with the straight tube portion of the tube body 1. As for the work procedure of the mounting work, first, the elbow cover 10 covers the elbow body portion 20 on the bent portion of the tube body 1 from the outside, and pulls out the elbow binding portion 30 to the inside of the bent portion to bind them together.

  In the binding of the elbow binding portion 30, the male binding member 31 and the female binding member 32 are pulled out to the inside of the bent portion of the tube body 1, and the engagement protrusion 310 of the male binding member 31 is engaged with the female binding member 32. It press-fits into any one of the receiving holes 320 to couple them together.

  The first embodiment is shown in FIGS. The elbow cover 10 has an elbow body portion 20 and an elbow binding portion 30, and the elbow binding portion 30 is provided with a pair of a male binding member 31 and a female binding member 32 facing each other. Further, the engagement protrusion 310 provided on the male binding member 31 in the elbow binding portion 30 is in a direction orthogonal to the longitudinal direction of the binding member, that is, in the embodiment, along the end wall near the free end of the binding member. Two are provided.

  The reinforcing member 33 formed on the female binding member 32 is a reinforcing plate member 330a obtained by folding the free end of the female binding member 32, and the engagement receiving hole 320 is the longitudinal length of the female binding member 32. Four pairs are provided in parallel to the direction. In the embodiment, the engagement receiving hole 320 is provided through the female binding member 32 and the reinforcing member 33.

  The bending direction of the reinforcing plate member 330a as the reinforcing member 33 is arbitrary, but the reinforcing plate member 330a in the embodiment is bent in a direction in which the reinforcing plate member 330a is accommodated inside the cover when the elbow cover 10 is attached to the tubular body 1. ing.

  The free end of the male binding member 31 is formed with a rounded corner so that the operator does not get injured at the corner of the iron plate. By forming the auxiliary bending part 34, it is set as the structure which ensured further safety | security so that an operator might not be injured by the cut end of an iron plate.

  In addition, although the said male side auxiliary bending part 34 functions also as a reinforcement member of the male type | mold binding member 31, whether the said male side auxiliary bending part 34 is formed, and when it forms, The bending direction is arbitrary.

  In the first embodiment, the reinforcing member 33 of the female binding part 31 is a reinforcing plate material formed by overlapping the free end of the female binding part 31 and is therefore compared with the joint part formed in a trifold manner in the conventional structure. The amount of plate material used for the female binding member 31 can be reduced.

  The procedure for attaching the elbow cover 10 to the tube body 1 is as follows. The binding member 32 is pulled out to the inside of the bent portion of the tube body 1, and then the engagement protrusion 310 of the male binding member 31 is press-fitted into one of the engagement receiving holes 320 of the female binding member 32 to couple them together. To do.

  As described above, the male binding member 31 and the female binding member 32 are bound by pressing the engaging protrusion 310 of the male binding member 31 into one of the engagement receiving holes 320 of the female binding member 32. Complete the binding process. The mounting of the elbow cover 10 to the tube body 1 is completed by simply press-fitting the engaging protrusion 310 into the engaging receiving hole 320.

  The second embodiment is shown in FIGS. The reinforcing members 33 formed on the female binding member 32 in the elbow binding portion 30 are two reinforcing rib members 330b formed along both side edges of the female binding member 32. Specifically, the reinforcing members 33 are arranged in two rows. It is a rib member formed between the provided engagement receiving hole 320 and the side edge of the female binding member 32. Note that it is arbitrary whether the protruding surface of the reinforcing rib member 330b is directed to the front or back surface.

  Since the female binding member 32 in the second embodiment is formed of a single plate material, the free end also forms a female side auxiliary bent portion 35 that is bent with a small folding width. Can be secured. However, in this case as well, whether or not the female side auxiliary bent portion 35 is formed and the bending direction when formed are arbitrary.

  Since the reinforcing member 33 formed on the female binding part 32 is the reinforcing rib member 330b formed on the two strips, the number of the plate material of the female binding part 32 is one. Therefore, in the second embodiment, In addition, the amount of use of the plate material may be less than that of the joint portion formed in the conventional structure, and also when compared with the female binding portion described in claim 2 of the present invention, The amount used is small and the resource saving effect is high.

  The elbow cover 10 in the second embodiment is the same as that of the first embodiment except for the reinforcing members 33, and the mounting procedure of the elbow cover 10 and the male binding member 31 and the female binding member 32 are the same. Since the joining procedure and the like are the same as in the case of the first embodiment, any explanation is omitted.

DESCRIPTION OF SYMBOLS 1 Tube 2 Thermal insulation material 3 Straight pipe cover 10 Elbow cover 20 Elbow trunk | drum 30 Elbow binding part 31 Male binding member 310 Engagement protrusion 310a Engagement shaft part 310b Engagement head 32 Female type binding member 320 Engagement receiving hole 320a Notch 33 Reinforcing member 330a Reinforcing plate member 330b Reinforcing rib member 34 Male side auxiliary bent portion 35 Female side auxiliary bent portion

Claims (3)

  The elbow cover (10) has an elbow body part (20) and an elbow binding part (30), and these members are formed of an iron plate or the like, and the elbow body part (20) has a plurality of strips. The bent portion of the tubular body can be covered with a member so as to have a U-shaped cross section. The elbow binding portion (30) is connected to the male binding member (31) at the opening of the elbow trunk portion (20). A female binding member (32) is provided as a pair so as to face each other. An engagement protrusion (310) is provided in the vicinity of the free end of the male binding member (31), and the female binding member (32) is provided. Provided with a plurality of pairs of engagement receiving holes (320) corresponding to the engagement protrusions (310), and a reinforcing member (33) formed on the female binding member (32). 20) is applied to the bent portion of the tubular body (1) from the outside, and then the elbow binding portion (3 ) Is pulled out to the inside of the bent portion of the tube body (1), the elbow cover (10) is mounted, and the engagement protrusion (310) of the male binding member (31) is engaged with the female binding member (32). An elbow protective cover characterized in that it is press-fitted into a receiving hole (320) to bind them together.   The elbow according to claim 1, wherein the reinforcing member (33) of the female binding part (32) is a reinforcing plate (330a) obtained by folding back the free end of the female binding member (32). Protective cover.   The reinforcing member (33) of the female binding portion (32) is a reinforcing rib member (330b) formed along the engagement receiving hole (320) of the female binding member (32). The elbow protective cover according to Item 1.

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