JPH0723891U - Pipe protection duct connection device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a connection device capable of connecting pipe protection ducts 1, 1 such that the distances between the ends thereof are various lengths. [Structure] A long support plate 12 is fixed to a support leg 11, long holes 14 are formed near both side edges of the support plate 12, and side plates 6, 6 of a pipe protection duct 1, 1 to be connected are formed.
The end portions of the side plates 6 and 6 can be fixed to the positions where the distance between them becomes a desired length by using the long holes 14, and the side plates 6 and 6 are tightened by the inner and outer contact plates 17 and 18, and the side plates 6, a cover 8 attached to the upper surface of 6,
The pipe protection ducts 1 and 1 are connected by tightening the inner and outer contact plates 20 and 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pipe protection duct for protecting pipes such as air-conditioning pipes arranged outdoors, and particularly to a connecting device for connecting end portions of the ducts.

[0002]

[Prior art]

 Conventionally, as a pipe protection duct, side plates with substantially U-shaped cross sections arranged on both sides, a cover mounted on the upper surface of the side plate, and a lower surface of the side plate are mounted at appropriate intervals. Also known is one having a plurality of base plates for supporting pipes.

Further, as a connecting device for connecting the ends of the pipe protection duct to each other, a base plate having the same shape as the base plate used for the pipe protection duct is connected to the opposite ends of the side plates of the pipe protection duct to be connected. The side plates are placed on the inner and outer surfaces of the side plates, and the side plates are sandwiched and fixed by fixing them with screws, and at the opposite end of the cover. A cover pad is also arranged on the inner and outer surfaces, and the cover is sandwiched and fixed by fixing them with screws (for example, Japanese Utility Model Laid-Open No. 5-47665). reference). The connecting device of this structure fixes the connecting end of the duct at a fixed position with respect to the base plate, and therefore the distance between the ends of the duct is always constant. Generally, pipe protection ducts with multiple types of unit length (for example, 2 m, 1 m, 0.5 m, etc.) are mass-produced in a factory, and those unit lengths are appropriately connected at the construction site. I am using it. However, depending on the connection location, a duct shorter than the shortest unit length (for example, 0.5 m) prepared in advance may be required. In this case, conventionally, a unit length duct was cut to a desired length and used.

[0004]

However, such a conventional method has a problem that a work for cutting a duct to a desired length is required at a construction site, resulting in a large amount of work. In addition, the parts that make up the pipe protection duct are usually made of steel sheet and are coated with powder to achieve sufficient rust prevention.However, when cutting work is performed at the construction site, the steel sheet is exposed at the cut end. However, even if a repair paint is applied to the cut end, there is a problem that the coating film is thin and easily rusted.

The present invention has been made in view of the above conventional problems, and the distance between the ends of the pipe protection duct can be changed to a desired length for connection, whereby the pipe protection duct can be connected. It is an object of the present invention to provide a pipe protection duct connecting device capable of eliminating the need to cut the pipe protection duct during the construction of.

[0006]

[Means for Solving the Problems]

 The present invention will be described with reference to the embodiments shown in FIGS. 1 to 6. In order to solve the above-mentioned problems, the present invention provides a support leg 11 with a considerable length (eg, 0 mm) in the longitudinal direction of a pipe protection duct. (2 m or more), so that the side plates 6, 6 of the pipe protection duct to be connected can be fixed to the support plate 12 so that the opposite ends have different lengths. The holes 14 or a plurality of through holes are formed in advance, and the side plate 6 is fixed at a desired position on the support plate 12 by the screw 30 and the nut 31, and the distance between the facing side plates 6 and 6 is set to a desired length. Can be configured. Further, the side plate inner contact plate 17 and the outer side contact plate 18 are arranged inside and outside the side plates 6, 6 and the side plates 6, 6 are fixed by tightening the center positions of both with the screw 22 and the nut 24. The inner cover plate 20 and the outer cover plate 21 for the cover are arranged inside and outside of the covers 8 and 8 to be connected, and the covers 8 and 8 are fixed by tightening the center position of both with the screw 22 and the nut 24. And the side plate inner pad plate 17, the side plate outer pad plate 18, the cover inner pad plate 20, and the cover outer pad plate 21 have substantially the same length as the support plate 12.

[0007]

[Action]

 In the connecting device 3 having the above-described structure, the side plate 6 is fixed to the desired position of the support plate 12 with the screw 30 and the nut 31, so that the distance between the opposed side plates 6 can be set to a desired length. The inner side plate 17 and the outer side plate 18 for the side plate which can be formed and are attached to the inside and the outside of the side plate 6, 6 are tightened at their central positions with the screw 22 and the nut 24, so that the side plate 6, 6 The side plates 6, 6 can be connected to each other irrespective of the size of the space between them, and the inner cover plate 20 and the outer cover plate 21 for the covers arranged inside and outside the covers 8, 8 can be screwed at their central positions. By tightening with the nut 22 and the nut 24, the covers 8 and 8 can be connected to each other regardless of the size of the gap between the covers 8 and 8. Thus, the pipe protection ducts can be connected so that the distance between the two ends is the desired length, so that the total length of the two connected pipe protection ducts can be adjusted according to the installation location, which is the same as in the past. Moreover, it is not necessary to cut a unit length of pipe protection duct to a desired length before use. Here, the length of the support plate 12 is determined in consideration of how much the total length of the two connected pipe protection ducts can be adjusted, and is usually 0.2 m or more. preferable.

[0008]

【Example】

 Embodiments of the present invention shown in the drawings will be described below. FIG. 2 is a perspective view schematically showing a pipe protection duct connected by using a connecting device according to an embodiment of the present invention. Reference numeral 1 is a pipe protection duct (hereinafter simply referred to as duct), 3 is a duct 1, A connecting device 4 connecting the ends of 1 to each other is a pipe housed in the duct 1. As shown in FIG. 5, the duct 1 includes side plates 6 arranged on both sides and having a substantially U-shaped cross section, and a cover 8 attached to the upper surface of an upper wall 6a of the side plate 6 by screws 7. The lower wall 6b of the side plate 6 is provided with a plurality of base plates 9 for supporting pipes, which are mounted at positions apart from the ends at appropriate intervals. A base plate 10 having the same shape as the base plate 9 is also attached to the lower wall 6b at one end of the side plate 6, and the base plate 10 is the connection disclosed in Japanese Utility Model Laid-Open No. 5-47665. It is used when connecting the duct 1 using the structure. When the side of the duct 1 to which the base plate 10 is attached is connected by the connecting device of the present invention, the base plate 10 is removed. The upper wall 6a and the lower wall 6b of the side plate 6 constituting the duct 1, the cover 8, the base plates 9, 10 and the like are provided with holes for threading the screws in necessary places in advance. Each of these members is usually made of steel plate and has a surface coated with powder.

FIG. 1 is an exploded perspective view of the connecting device 3, FIG. 3 is a schematic cross-sectional view showing a part of a central position of the connecting device 3 to which the duct 1 is connected with respect to the longitudinal direction of the duct, and FIG. 4 shows the connecting device 3. FIG. 6 is a schematic cross-sectional view as seen in the direction of arrow AA in FIG. 3, and FIG. 6 is a schematic perspective view of the support plate 12 used in the connection device 3. As shown in the exploded view of FIG. 1, the connection device 3 includes a support leg 11 and a support plate 12 attached to the upper surface of the support leg 11 for supporting the end portions of the side plates 6 to be connected. , An inner side plate 17 for a side plate arranged inside the side plate 6, an outer side plate 18 for a side plate arranged outside the side plate 6, and an inner side cover plate for a cover arranged inside the cover 8. A cover plate 20 and an outer cover cover plate 21 arranged outside the cover 8 are provided.

1 to 4 and 6, the support plate 12 has a considerable length in the longitudinal direction of the duct 1 to be connected, and both ends thereof are bent upward to support the pipe. To form a support base 13. Further, elongated holes 14 extending in the longitudinal direction of the duct are formed near both side edges of the support plate 12. As shown in FIG. 4, the elongated hole 14 is provided to allow the screw 30 for fixing the lower wall 6b of the side plate 6 and the support plate 12 to pass therethrough. Can be fixed at different positions in the longitudinal direction. In other words, by providing the elongated hole 14, it is possible to variously change the distance L between the end portions of the side plates 6, 6 fixed to the support plate 12 with the screw 30 and the nut 31. Instead of the elongated hole 14, a plurality of through holes may be arranged at appropriate intervals in the duct longitudinal direction, and the interval L may be made variable thereby.

Here, the length of the support plate 12 and the formation positions of the elongated holes 14 (or the plurality of through holes) are prepared in advance so that the maximum value of the distance L between the side plates 6 fixed to the support plate 12 is large. The length of the duct 1 is approximately equal to the shortest length of the duct 1, and the minimum value of the distance L is such that a screw 22 for tightening the inner and outer pad plates 17, 18 and 20, 21 can be passed through. It is set to be slightly larger than. For example, when the duct 1 having a unit length of 2 m, 1 m, or 0.5 m is prepared, the maximum value of the interval L is 0.5 m, which is the shortest length of the duct 1. As described above, when the shorter duct 1 of about 0.2 m is prepared, the maximum value of the interval L is 0. It is set to be about 2 m. Generally, the longer the duct 1, the more economical. Therefore, the shortest duct length to be prepared is often about 0.5 m, and is rarely about 0.2 m. Therefore, the length of the support plate 12 is usually 0.2 m or more, preferably 0. It should be at least 5 m.

The inner side plate 17 for the side plate has an upper wall 17a and a vertical wall 17b, and holes 23a, 23b for passing the screws 22 are formed in the respective central portions in the duct axial direction. A nut 24 is fixed to the back by welding or the like. Holes 25 are also formed in the outer pad plate 18 for the side plate at positions corresponding to the holes 23b of the inner pad plate 17. The inner cover plate 20 for the cover is made slightly shorter in the width direction of the duct than the outer cover plate 21, and the center position of the inner cover plate 20 for the cover and the outer cover plate 21 for the cover in the duct axial direction. A semi-circular hole 26a and a circular hole 27a which are aligned with each other are formed near both ends in the width direction. The holes 26a and 27a are formed so as to be aligned with the holes 23a formed in the upper wall 17a of the inner side plate 17 for the side plate when the contact plates 20 and 21 are attached at predetermined positions. Has been done. The length of the inner side contact plate 20 in the duct width direction may be slightly longer than that of the illustrated embodiment, and a circular hole may be formed instead of the semicircular hole 26a. A hole 26b and a hole 27b which are aligned with each other are formed at the center position in the duct axial direction and the center in the width direction of the inner cover plate 20 for the cover and the outer cover plate 21 for the cover. A nut (not shown) is fixed to the back of the by welding or the like.

A stopper portion 20 a which is bent vertically is formed on one side edge of the inner cover plate 20 for the cover. As shown in FIG. 4, the position of the stopper portion 20a is such that the hole 26a coincides with the hole 23a when the stopper portion 20a is pressed against the side edge of the upper wall 17a of the inner side plate 17 for the side plate. Has been defined.

The lengths of the inner side cover plate 17 for the side plate, the outer side cover plate 18 for the side plate, the inner side cover plate 20 for the cover, and the outer side cover plate 21 for the cover in the duct axial direction are substantially equal to the length of the support plate 12. Is made. The support plate 12 and the contact plates 17, 18, 20, 21 and the like that compose the connecting device 3 are also made of steel plates and are powder coated.

Next, the connecting operation of the ducts 1, 1 by the connecting device 3 will be described. First, the support plate 12 is fixed to the support leg 11. Next, the covers 8 of the two ducts 1 to be connected are removed, and the ends of the side plates 6 are fixed to the support plate 12 with the screws 30 and the nuts 31 in a state of facing each other as shown in FIG. At this time, the distance L between the ends of the side plates 6 is adjusted so that the total length of the two connected ducts can be accommodated in a predetermined place. For example, when the installation length of the duct is short, the interval L is made small, and when the installation place is long, the interval L is made large. This makes it possible to install the unit in various lengths without cutting the unit length duct that has been prepared in advance.

After the side plates 6 and 6 are fixed to the support plate 12 so as to face each other, as shown in FIGS. 3 and 4, the side plate inner backing plate 17 is provided inside the side plates 6 and 6 and the holes 23a thereof are formed. , 23b are pressed so that they are located approximately in the center between the ends of the side plates 6, 6, and then the outer contact plate 18 is applied to the outer side of the side plates 6, 6 and the screw 22 is screwed in from the outer side. The inner cover plate 17 and the outer cover plate 18 are tightened, and the side plates 6, 6 sandwiched therebetween are connected.

Next, the inner cover cover plate 20 is inserted between the upper wall 17a of the inner cover plate 17 and the upper wall 6a of the side plate 6, and is pushed in until the stopper portion 20a abuts against the upper wall 17a. . As a result, the inner cover plate 20 for the cover is positioned at the correct position, and the hole 26a thereof coincides with the hole 23a of the inner cover plate 17. After that, the covers 8 and 8 are attached to the side plates 6 and 6 fixed to the support plate 12, respectively, and then the outer cover plate 21 for the cover is attached to the joint portion of the covers 8 and 8 and the holes 27a, It is pressed so that 27b is aligned with the lower holes 26a and 26b, and fixed with the screw 22. As a result, the covers 8 and 8 are sandwiched and connected by the cover inner contact plate 20 and the outer contact plate 21.

As described above, the two ducts 1 and 1 are connected by the connecting device 3 in a state where the end portions of the ducts are separated by a desired distance L. Here, since both ends of the side plates 6, 6 are fixed to the support plate 12 supported by the support legs 11, a strong connection can be secured, and therefore, the side plates for connecting the side plates 6, 6 to each other. The contact plates 17, 18 and the cover plates 20, 21 for interconnecting the covers 8, 8 do not require much strength, they simply block the joints and prevent foreign particles, dust, Any material can be used as long as it can prevent entry of water and the like. Therefore, these backing plates may be thin plates, and the cost can be reduced. Further, since the side plate contact plates 17 and 18 and the cover contact plates 20 and 21 have substantially the same length as the support plate 12, the distance L between the end portions of the ducts 1 and 1 supported by the support plate 12 is L. Whichever size is used, the side plates 6, 6 and the covers 8, 8 of the ducts 1, 1 can be connected without any trouble, and the ducts 1, 1 can be connected with good appearance. Further, since the inner cover plate 20 disposed inside the cover 8 is provided with the stopper portion 20a, the position can be easily determined and the assembling work is extremely easy.

[0019]

[Effect of device]

 As described above, the connecting device of the present invention can connect two ducts by adjusting the distance between the ends of the ducts in various ways. It is possible to adjust the total length of the duct to the desired length, eliminating the need to cut the duct to the desired length at the construction site as in the past, reducing the amount of work and rusting from the cut end of the duct. It also has the effect of eliminating the problem of occurrence of.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an exploded view of a connection device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a pipe protection duct connected by the connecting device.

FIG. 3 is a schematic cross-sectional view showing a part of the central position of the connecting device connecting the ducts with respect to the longitudinal direction of the duct.

FIG. 4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a schematic perspective view showing the pipe protection duct in the above embodiment in an exploded manner.

FIG. 6 is a schematic perspective view of a support plate used in the above connecting device.

[Explanation of symbols]

 1 Pipe Protection Duct 3 Connection Device 4 Piping 6 Side Plate 8 Cover 10 Base Plate 11 Support Leg 12 Support Plate 14 Long Hole 17 Side Plate Inner Cover Plate 18 Side Plate Outer Cover Plate 20 Cover Inner Cover Plate 21 Cover Outer Cover Plate 22 Screw 24 Nut 30 Screw 31 Nut

Claims (1)

[Scope of utility model registration request] 1. A connection device (3) for connecting a pipe protection duct (1) having a pair of side plates (6) and a cover (8) attached to the upper part thereof, the support leg (11). ) And a support plate (12) attached to the support leg (11) for supporting side plates (6, 6) at opposite ends of a pipe protection duct to be connected, , A long hole (14) or a plurality of elongated holes (14) having a length capable of supporting with the end portions facing each other largely separated and changing the length between the end portions of the side plate to fix the side plate. Support plate with through holes (1
2), screw means (30, 31) for fixing the supporting plate (12) and the side plate (6) to each other, and the inside of the side plate (6, 6) fixed to the supporting plate (12). An inner pad plate (17) for a side plate arranged in
A side plate outer pad (18) arranged outside the side plates (6, 6), the side plate inner pad (17) and the side plate outer pad (18) are arranged in a duct longitudinal direction. Screw means (22, 24) for tightening each other at the central position of the support plate and the support plate (12)
Inner cover plate (20) arranged below the cover (8, 8) of the pipe protection duct fixed to the outer cover plate and outer cover plate (20) arranged outside the cover (8, 8). 21) and screw means (22, 24) for mutually tightening the inner cover plate (20) for the cover and the outer cover plate (21) for the cover at a central position in the longitudinal direction of the duct. The inner side cover plate (17) for side plate, the outer side cover plate (18) for side plate, the inner side cover plate (20) for cover, and the outer side cover plate (21) for cover have substantially the same length as the support plate (12). A pipe protection duct connection device characterized by having.