JPH0734294U - Pipe protection duct connection device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a connection device capable of connecting pipe protection ducts 1 and 1 so that the distances between the ends thereof are various lengths. [Structure] Bottom part 17 of inner pad 17 for side plate
The elongated holes 14 are formed in c, and the end portions of the side plates 6, 6 of the pipe protection ducts 1 and 1 to be connected and the support plate 10 arranged at the end portions are attached to the side portions using the elongated holes 14. By fixing the inner side plate 17 for the plate at a desired position, the distance between the side plates 6, 6 becomes a desired value,
By tightening the side plates 6, 6 with the inner and outer contact plates 17, 18, and by tightening the covers 8, 8 attached to the upper surfaces of the side plates 6, 6 with the inner and outer contact plates 20, 21, the pipe protection duct 1 1 is connected.

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 invention of claim 1 will be described with reference to the embodiment shown in FIGS. 1 to 6. In order to solve the above-mentioned problems, the present invention has an inner side contact plate for the side plate inside and outside the side plates 6, 6. 17 and the outer backing plate 18 are arranged, and the central positions of both are fastened with the screw 22 and the nut 24 to connect the side plates 6 and 6, and to the inside and outside of the covers 8 and 8 to be connected By placing the backing plate 20 and the outer backing plate 21 and tightening the center positions of both with the screw 22 and the nut 24, the cover 8 and 8 are connected, and the backing plates 17, 18, 20, It is possible to increase the length of 21 in the longitudinal direction and increase the interval L between the ducts 1 and 1. Further, the elongated holes 14 are formed in the inner side plate 17 for the side plate, and the support plate 10 attached to the end portions of the side plates 6, 6 of each duct 1 is attached to the inner side plate 17 for the side plate as desired. In addition to being fixable in position, at least one of the supporting plates 10 is supported by supporting legs 11.

According to the second aspect of the invention, as shown in the embodiment of FIGS. 7 and 8, the support plate 12 is attached to the central portion of the inner side plate 17 for the side plate to be supported by the support legs 11, and the side plate is also supported. A long hole 14 is formed in the inner side contact plate 17 for the inside so that the end portions of the side plates 6, 6 of each duct 1 can be fixed at a desired position with respect to the inner side cover plate 17 for the side plate.

[0008]

[Action]

 In the connecting device 3 according to the first aspect of the invention having the above structure, the side plates 6, 6 and the supporting plates 10, 10 are fixed at desired positions in the longitudinal direction of the inner side plate 17 for side plates by screws 30 and nuts 31. Therefore, the distance L between the side plates 6 and 6 facing each other can be set to a desired length, and the inner side plate 17 and the outer side plate 18 for the side plates arranged inside and outside the side plates 6 and 6 can be formed. By tightening the screws 22 and nuts 24 at the center positions of both sides, the side plates 6, 6 can be connected to each other irrespective of the size of the distance between the side plates 6, 6, and the inside and outside of the covers 8, 8 can be connected. The inner cover plate 20 and the outer cover plate 21 for the cover, which are arranged in the same manner, are tightened at their central positions with the screw 22 and the nut 24, so that the cover 8, Regardless of the size of the spacing can be connected to the cover 8, 8 to each other. Thus, the pipe protection duct 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, and it is possible to adjust it as before. Moreover, it is not necessary to cut a unit length of pipe protection duct to a desired length before use. Further, by supporting the support plate 10 attached to the end portion of the side plate with the support legs 11, the connection portion can be firmly supported.

According to the second aspect of the present invention, the side plates 6, 6 are fixed at desired positions in the longitudinal direction with respect to the inner side plate 17 for the side plate, the central portion of which is supported by the support plate 12 and the support legs 11. Therefore, as in the first aspect of the invention, the pipe protection duct can be connected so that the distance between the ends of the pipe protection duct becomes a desired length. Further, by supporting the substantially central portion of the inner side plate 17 for the side plate by the support plate 12 and the support legs 11, the connecting portion can be firmly supported.

[0010]

Embodiments 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 connection 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 for connecting the end portions of 1 to each other so as to be able to adjust the distance is a pipe housed in the duct 1. As shown in FIG. 5, this duct 1 has a side plate 6 having a substantially U-shaped cross section arranged on both sides, and a cover 8 attached to the upper surface of an upper wall 6a of the side plate 6 by a screw 7. Further, the lower wall 6b of the side plate 6 is provided with a plurality of base plates 9 for supporting the pipes, which are mounted at positions apart from the ends at appropriate intervals. A support 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 this support plate 10 is used when connecting the ducts. . The upper wall 6a and the lower wall 6b of the side plate 6 constituting the duct 1, the cover 8, the base plate 9, the support plate 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 the surface thereof is powder coated.

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 a longitudinal direction of the duct, and FIG. 4 shows the connecting device 3. 3 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 a side plate inner pad 17 used in the connection device 3. As shown in the exploded view of FIG. 1, the connecting device 3 includes a support plate 10 attached to an end of the side plate 6 of each duct 1, a support leg 11 supporting each support plate 10, and an inside of the side plate 6. The inner side cover plate 17 for the side plate, the outer side cover plate 18 for the side plate arranged outside the side plate 6, the inner side cover plate 20 for the cover arranged inside the cover 8, and the cover 8 An outer cover plate 21 for a cover and the like arranged on the outer side of the. If the distance between the ends of the ducts 1 and 1 to be connected is small and the distance between the support plates 10 and 10 is small, one of the support legs 11 may be omitted.

The inner side cover plate 17 for the side plate and the outer side cover plate 18 for the side plate are for sandwiching and fixing the side plates 6, 6 to be connected, and also for the inner side cover plate 20 for the cover and the cover. The outer cover plate 21 is used for sandwiching and fixing the covers 8 to be connected. Therefore, the length of each of the contact plates 17, 18, 20, 21 is set to be larger than the maximum value of the distance L between the ends of the ducts to be connected by the amount by which the side plate 6 and the cover 8 are sandwiched. Has been. Usually, the maximum value of the distance L between the ends of the ducts to be connected is almost equal to the shortest one of the ducts 1 prepared for construction, so the length of each caul plate is longer than that of the shortest duct. Is also set a little larger. For example, when the duct 1 having unit lengths of 2 m, 1 m, and 0.5 m is prepared, the maximum value of the interval L is about 0.5 m, which is the shortest length of the duct 1. If a shorter duct 1 of about 0.2 m is also prepared, the maximum value of the interval L will be about 0.2 m, so the length of each caul plate will be a little less than that length ( It is set to be long (about 0.08 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 each of the caul plates 17, 18, 20 and 21 should preferably be 0.28 m or more, more preferably 0.58 m or more.

The inner side plate 17 for the side plate has an upper wall 17a, a vertical wall 17b, and a lower wall 17c. The lower wall 17c is for fixing the support plate 10 together with the side plate 6, and the elongated hole 14 is formed over substantially the entire length thereof. As shown in FIG. 4, the elongated hole 14 is provided for passing a screw 30 for fixing the support plate 10 and the lower wall 6b of the side plate 6, and thereby the support plate 10 and the side plate 6 are provided. 6 and 6 can be fixed at different positions in the longitudinal direction with respect to the inner side plate 17 for the side plate. 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 inner side plate 17 for the side plate by 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 varied by the arrangement.

The upper wall 17a and the vertical wall 17b of the inner side plate 17 for the side plate are provided with holes 23a, 23b for passing the screws 22 in the central portions in the duct axial direction, respectively, and behind them. The nut 24 is fixed by welding or the like. Holes 25 are also formed in the outer side contact plate 18 for the side plate at positions corresponding to the holes 23b of the inner side contact plate 17. The side plate outer pad 18 may have a flat shape, but in the present embodiment, the lower end is bent inward to form a reinforcing rib 18a.

The inner cover plate 20 for the cover is made slightly shorter in length in the duct width direction than the outer cover plate 21 for the cover, and the inner cover plate 20 for the cover and the outer contact plate 21 for the cover are made. A semi-circular hole 26a and a circular hole 27a which are aligned with each other are formed at the center of the duct axial direction and in the vicinity of both ends in the width direction. The holes 26a and 27a are formed so as to coincide 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. Holes 26b and 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 cover and the outer cover plate 21 for cover. A nut (not shown) is fixed to the back of 26b by welding or the like.

A stopper portion 20 a that 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 is aligned 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 support plate 10, the side plate inner pad plate 17, the side plate outer pad plate 18, the cover inner pad plate 20, the cover outer pad plate 21 and the like which constitute the connection device 3 are also made of steel plates and are made of powder. The body is painted.

Next, the connecting operation of the ducts 1 and 1 by the connecting device 3 will be described. First, remove the covers 8 of the two ducts 1 that should be connected, and with the ends of the side plates 6 facing each other as shown in FIG. The support plate 10 is placed on 17c, the whole is fixed with screws 30 and nuts 31, and the support plate 10 is attached to the support legs 11 before and after that. At this time, the mounting position of the side plate 6 with respect to the inner side plate 17 for side plate is adjusted by using the long hole 14 provided in the inner side plate 17 for side plate, and the center of the inner side plate 17 for side plate is adjusted. Is adjusted to be substantially in the center between the end portions of the side plates 6 and the distance L between the end portions of the side plate 6 is adjusted to a desired length. As a result, the ducts 1 and 1 can be connected at a desired interval, and there is no need to cut and connect the unit length ducts according to the length of the duct installation place as in the conventional case.

After fixing the inner side plate 17 for the side plate to the side plates 6, 6 and the support plates 10, 10, the outer side plate 18 is attached to the outside of the side plates 6, 6 as shown in FIGS. 3 and 4. Then, the inner contact plate 17 and the outer contact plate 18 are tightened by screwing the screw 22 from the outside, and the side plates 6, 6 sandwiched therebetween are connected.

Next, the cover inner 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 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, both ends of the side plates 6, 6 are fixed to the support plate 10 supported by the support legs 11, and the inner side plate 17 for the side plate is fixed to the support plate 10 and the side plates 6, 6. Therefore, a strong connection can be ensured. Therefore, the side plates 6, 18 for connecting the side plates 6, 6 to each other and the cover plates 20, 21 for the cover for connecting the covers 8, 8 to each other can be secured. Does not require so much strength, and these may be those that can simply block the joints and prevent dust, dust, water, etc. from entering from the outside. Therefore, these backing plates may be thin plates, and the cost can be reduced. Further, since the inner cover plate 20 arranged inside the cover 8 is provided with the stopper portion 20a, the positioning can be performed easily and the assembling work is extremely easy.

Next, a connection device 3A according to an embodiment of the invention of claim 2 shown in FIGS. 7 and 8 will be described. 7 and 8, the same parts as those of the embodiment of FIGS. 1 to 6 are designated by the same reference numerals and the description thereof will be omitted. In the connection device 3A of this embodiment, instead of attaching the support plates to the ends of the ducts 1 and 1 to be connected, respectively, the support plate 12 (same as the support plate 10 in the above-described embodiment is provided at the center position between the ends). (Structure)), and the supporting plate is supported by the supporting legs 11. The side plate inner pad 17 is fixed to the support plate 12 with screws 30 and nuts 31, and the side plate inner pad 17 is fixed to the side plate 6 with screws 33 and nuts 34. Here, the attachment position of the side plate 6 can be adjusted by inserting the screw 30 into the slot 14 provided in the side plate inner side contact plate 17, and the distance L between the side plates 6 and 6 is desired. It can be set to the value of. Other configurations are similar to those of the embodiment shown in FIGS.

Also in the connecting device 3A of this embodiment, the ducts 1 and 1 can be connected so that the distance L between them can be adjusted. Since only one set of the support plate 12 and the support leg 11 is used in this embodiment, the number of parts can be reduced and the cost can be reduced as compared with the previous embodiment (shown in FIGS. 1 to 6). be able to. Since this embodiment is inferior in strength to the previous embodiment, it is suitable when the interval L between the ducts is small.

[0024]

[Effect of device]

 As described above, both of the connecting devices according to the inventions of claims 1 and 2 can connect the two ducts by adjusting the distance between the ends of the two ducts variously. It is possible to adjust the total length of the connected duct to the desired length when connecting the ducts, which eliminates the need to cut the duct to the desired length at the construction site as in the past, thus reducing the workload. It also has the effect of eliminating the problem of rust from the cut end of the duct.

[Brief description of drawings]

1 is a schematic perspective view showing a disassembled 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 an inner pad for a side plate used in the above connecting device.

FIG. 7 is a schematic perspective view showing an exploded view of a connection device according to an embodiment of the invention of claim 2;

8 is a schematic cross-sectional view showing the connection device of FIG. 7 in the same portion as FIG.

[Explanation of symbols]

 1 Piping Protection Duct 3, 3A Connection Device 4 Piping 6 Side Plate 8 Cover 10, 12 Support Plate 11 Support Leg 14 Long Hole 17 Side Plate Inner Cover Plate 18 Side Plate Outer Cover Plate 20 Cover Inner Cover Plate 21 Cover Outer patch plate 22, 30, 33 Screws 24, 31, 34 Nut

Claims (2)

[Scope of utility model registration request] 1. A connecting device for connecting the ends of pipe protection ducts (1, 1) having a pair of side plates (6) and a cover (8) attached to the upper part thereof so that the distance between them can be adjusted. 3) and the ducts (1,
1) Support plates (10, 10) respectively attached to the side plates (6, 6) at opposite ends of (1), and support legs (11) provided to support at least one of the support plates, and connection An inner side plate (17) for side plates, which is arranged inside the side plates (6, 6) at the opposite ends of the duct (1, 1) to be fixed and is fixed to the support plate (10). , The support plate (10)
Inner side plate (17) for a side plate having a long hole or a plurality of through holes so that the fixing position with respect to the side plate can be changed, and the side plate inner side cover plate (17) and a support plate (10)
And a screw means (30, 31) for fixing the side plate, an outer side plate outer plate (18) arranged outside the side plate, and an inner side plate (17) for the side plate.
And screw means (22,
24), an inner cover plate (20) for the cover arranged below the cover (8, 8) at the opposite ends of the ducts (1, 1) to be connected, and the cover (8, 8). Screw means (22) for mutually tightening the outer cover cover plate (21) arranged on the outer side, the inner cover plate (20) for cover and the outer cover plate (21) for cover at the central position in the duct longitudinal direction. , 24), and the inner plate for side plate (17), the outer plate for side plate (18), the inner plate for cover (20), and the outer plate for cover (21), A pipe protection duct connection device having a length greater than a maximum distance between ends of the ducts to be connected. 2. A connection device for connecting the ends of a pipe protection duct (1, 1) having a pair of side plates (6) and a cover (8) attached to the upper part thereof so that the distance between them can be adjusted. 3A) and the ducts (1,
1) A supporting leg (11) arranged substantially in the center between the opposite ends, a supporting plate (12) held by the supporting leg (11), and fixed to the supporting plate (12), An inner side plate (17) for a side plate, which is arranged inside the side plates (6, 6) at opposite ends of the ducts (1, 1) to be connected and fixed to the side plate, wherein the side An inner pad plate (17) for a side plate, which is provided with an elongated hole or a plurality of through holes so that the fixing position with respect to the plate support plate (12) is variable, the inner pad plate (17) for the side plate, and the side plate (6). ) Fixing means, a side plate outer pad plate (18) arranged outside the side plate (6, 6), and a side plate inner pad plate (1).
Screw means (2) for mutually tightening 7) and the outer side contact plate (18) for side plate at the central position in the duct longitudinal direction.
2, 24), an inner cover plate (20) for a cover arranged below the covers (8, 8) at the opposite ends of the ducts (1, 1) to be connected, and the covers (8, 8). ), An outer cover plate (21) for the cover, an inner cover plate (20) for the cover, and an outer cover plate (21) for the cover, which are arranged outside
And a screw means (22, 24) for mutually tightening at a central position in the longitudinal direction of the duct, and the inner side cover plate (17) for the side plate, the outer side cover plate (18) for the side plate, and the cover. A pipe protection duct connection device, wherein the inner cover plate (20) and the outer cover cover plate (21) have a length larger than the maximum distance between the ends of the ducts to be connected.