Stay pipe and operating device installation kit

Abstract

To provide a stay pipe and an operation device mounting kit, capable of preventing undesired deformation and damage from occurring on a back surface of an operation device even when a nut is fastened excessively.SOLUTION: An operation device 300 is fixed to one end part of a stay pipe 100. At the other end part of the stay pipe 100, a screw part 122 with which a nut 200 is engaged, and a slit 124 are formed. When the nut 200 is tightened beyond a predetermined strength from a state where the operation device 300 and the nut 200 sandwich a wall, the other end part elastically deforms in a direction in which the slit 124 narrows, and the screw part 122 and the nut 200 are disengaged.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a stay pipe and a mounting kit for mounting an operating device on a wall surface. [Background technology]

[0002] In the water heating device, the hot water temperature and other settings are set via an operating device (remote control). Operating devices are installed in the living room, kitchen, and also in the bathroom. The operating device is installed in the bathroom using a stay pipe. In this case, the stay pipe is arranged so as to straddle the wall between the bathroom and the outside of the bathroom. The operating device is installed at the end of the stay pipe on the bathroom side, and a nut is installed at the end of the stay pipe on the outside of the bathroom. In addition, the wiring of the operating device is passed through the inside of the stay pipe and drawn out to the outside of the bathroom.

[0003] In this way, when the nut on the outside of the bathroom is tightened with the operating device and the nut arranged on both ends of the stay pipe, the distance between the nut and the operating device becomes shorter. After the wall is sandwiched between the operating device and the nut, the nut is further tightened to press the back of the operating device against the wall of the bathroom. This fixes the operating device to the wall inside the bathroom.

[0004] The following Patent Document 1 describes this type of fixing structure for a stay pipe. In this fixing structure, a slit is provided at the end of the stay pipe on the operating device side. In a state in which the end of the stay pipe is elastically deformed so that the slit closes, the end is inserted into a storage section on the back of the operating device. Thereafter, the elastic deformation of the end is released. As a result, a flange section provided at the tip of the end engages with an engagement section on the operating device side, and the end of the stay pipe is fixed to the back of the operating device. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-128131 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned structure, the operating device is fixed to the wall surface by tightening the nut attached to the end of the stay pipe. However, if the nut is tightened too much, the back surface of the operating device is pulled excessively by the stay pipe. This may cause undesirable deformation or damage to the back surface of the operating device.

[0007] In view of the above problem, the present invention has an object to provide a mounting kit for a stay pipe and an operating device that can prevent undesirable deformation or damage from occurring on the back surface of the operating device even if a nut is tightened excessively. [Means for solving the problem]

[0008] A first aspect of the present invention relates to a stay pipe for installing an operating device fixed to one end on a side surface of a wall. The stay pipe according to this aspect includes a threaded portion formed on the other end with which a nut is engaged, and a slit formed on the other end. When the nut is tightened beyond a predetermined strength with the operating device and the nut sandwiching the wall, the other end elastically deforms in a direction narrowing the slit, and the engagement between the threaded portion and the nut is released.

[0009] According to the stay pipe of this embodiment, when the nut is tightened beyond a predetermined strength from a state in which the operating device and the nut are sandwiched between the wall, the other end of the stay pipe elastically deforms in the direction in which the slit narrows, and the engagement between the screw part and the nut is released. Therefore, even if the operator overtightens the nut, the back surface of the operating device can be prevented from being excessively pulled by the stay pipe. Therefore, it is possible to prevent undesirable deformation or damage to the back surface of the operating device due to overtightening of the nut.

[0010] In the stay pipe according to this aspect, a plurality of the slits may be arranged in the circumferential direction of the other end portion.

[0011] In this way, by arranging a plurality of slits, the other end of the stay pipe is easily elastically deformed. Therefore, when the nut is overtightened, the engagement between the threaded portion of the stay pipe and the nut can be smoothly released. Therefore, it is possible to more reliably prevent undesirable deformation or damage to the rear surface of the operating device due to overtightening of the nut.

[0014] The stay pipe according to this embodiment may be configured to include a first pipe and a second pipe screwed to the first pipe. In this case, the operating device is installed in the first pipe, and the threaded portion and the slit are formed in the second pipe. When the nut is further tightened from a state in which the nut is tightened to the end of the threaded portion formed in the second pipe, the second pipe rotates with the rotation of the nut, and the screwing between the first pipe and the second pipe progresses, and the overall length of the stay pipe is shortened.

[0015] According to this configuration, the length of the stay pipe is variable within a range in which the first pipe and the second pipe can be screwed together. This allows the stay pipe to be hung on walls of various thicknesses. This allows the operating device to be installed on the surface of walls of various thicknesses.

[0016] In this case, the slit may be formed so as to extend at least to a depth near the terminal end of the threaded portion.

[0017] In this way, when the nut is tightened to the end of the threaded portion, the slit extends over most of the range of the end where the nut screws in. Therefore, when the nut is tightened further and a large force is applied to the meshing position between the nut and the threaded portion, the range of the end where the nut screws in smoothly elastically deforms, making it easier for the nut and the threaded portion to properly disengage. This makes it possible to reliably prevent undesirable deformation or damage to the back of the operating device due to overtightening of the nut.

[0018] In this case, the slit may extend deeper than the depth of the terminal end of the screw portion.

[0019] In this way, when the nut is tightened to the end of the threaded portion, the range of the end into which the nut is screwed is more easily elastically deformed. Therefore, when the nut is tightened too much and a large force is applied to the engagement position between the nut and the threaded portion, the engagement between the nut and the threaded portion can be more reliably released. Therefore, it is possible to more reliably prevent undesirable deformation or damage to the back surface of the operating device due to overtightening of the nut.

[0020] In this aspect, for example, the operating device is an operating device for a water heater installed in a bathroom, and the wall is a wall that exists between the bathroom and the outside of the bathroom.

[0021] In this case, undesirable deformation or damage caused by overtightening the nut can be avoided, while the operating device can be properly installed on the wall surface in the bathroom.

[0022] A second aspect of the present invention relates to an installation kit for an operating device. The installation kit according to this aspect includes the stay pipe according to the first aspect and the nut.

[0023] The mounting kit for the operating device according to this aspect includes the stay pipe according to the first aspect, so that it is possible to prevent undesired deformation or damage to the rear surface of the operating device due to overtightening of the nut. This makes it possible to improve the workability in mounting the operating device and to satisfactorily install the operating device on the wall surface. Effect of the Invention

[0024] As described above, according to the present invention, it is possible to provide a mounting kit for a stay pipe and an operating device that can prevent undesirable deformation or damage from occurring to the back surface of the operating device even if the nut is tightened excessively.

[0025] The effects and significance of the present invention will become clearer from the following description of the embodiment. However, the embodiment described below is merely an example of how the present invention can be put into practice, and the present invention is not limited to the embodiment described below. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view showing the configuration of an operating device and parts used for mounting the operating device according to an embodiment. [Diagram 2] Fig. 2(a) is a side view showing a configuration of a second pipe according to the embodiment, and Fig. 2(b) is a side view showing a state in which a nut is attached to the second pipe according to the embodiment. [Diagram 3] FIG. 3 is a perspective view showing a state in which a stay pipe and a nut are attached to the operating device according to the embodiment. [Figure 4] FIG. 4 is a side view illustrating a state in which the operating device and the nut sandwich a wall according to the embodiment. [Diagram 5] Fig. 5(a) is a cross-sectional view showing a state where the nut is properly tightened when the operating device is attached according to the embodiment, and Fig. 5(b) is a cross-sectional view showing a state where the nut is overtightened when the operating device is attached according to the embodiment. [Figure 6] 6(a) and (b) are rear views showing an example of slit arrangement according to a modified example, and Fig. 6(c) and (d) are side views showing an example of slit formation according to another modified example. [Figure 7] FIG. 7 is a perspective view showing the configuration of an operating device and parts used for mounting the operating device according to still another modified example. [Figure 8] FIG. 8 is a schematic diagram showing a state in which the operating device is installed on a wall using the stay pipe shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, a configuration is shown in which an operating device (remote control) for a water heater is installed on the wall of a bathroom. For convenience, arrows indicating up, down, left, right, front, back, and rear are added to each figure. In this embodiment, the up, down, left, right, front, and rear directions correspond to the up, down, left, right, front, and rear directions of the operating device.

[0028] FIG. 1 is a perspective view showing the configuration of an operating device 300 and parts used for mounting the operating device 300.

[0029] 1, the mounting structure for the operating device 300 is made up of a stay pipe 100, a nut 200, a sealing member 400, and a wall jig 500. The stay pipe 100 and the nut 200 constitute a mounting kit 10 for mounting the operating device 300 on a wall surface.

[0030] The stay pipe 100 is configured by combining a first pipe 110 and a second pipe 120. The first pipe 110 and the second pipe 120 are made of an elastically deformable material such as synthetic resin. The first pipe 110 and the second pipe 120 have a cylindrical shape with the front and rear open. The first pipe 110 is slightly longer than the second pipe 120. The outer diameter of the first pipe 110 is larger than the outer diameter of the second pipe 120.

[0031] The first pipe 110 has a threaded portion 111 formed on the outer periphery of the front end. Furthermore, a threaded portion 112 is formed on the inner surface of the first pipe 110 over almost the entire length from the rear end. Furthermore, a plurality of recesses 113 are formed intermittently in the circumferential direction on the outer surface of the rear end of the first pipe 110. The outer shape of the first pipe 110 is constant except for the recesses 113.

[0032] FIG. 2(a) is a side view showing the detailed configuration of the second pipe 120. As shown in FIG.

[0033] The second pipe 120 has a threaded portion 121 formed from the front end toward the rear. A peripheral surface portion 123 having an outer diameter larger than that of the threaded portion 121 is formed on the rear side of the threaded portion 121. The outer surface of the peripheral surface portion 123 is a cylindrical surface. Furthermore, a threaded portion 122 having the same diameter as the peripheral surface portion 123 is formed on the rear side of the peripheral surface portion 123.

[0034] The threaded portion 122 has two slits 124 (see FIG. 1) extending forward from the rear end. Each slit 124 extends to a depth near the end of the threaded portion 122. The two slits 124 are arranged at approximately equal intervals in the circumferential direction. That is, the two slits 124 are arranged at intervals of approximately 180° in the circumferential direction. The threaded portion 122 meshes with a threaded portion 201 (see FIG. 1) of a nut 200. The width of the threaded portion 122 in the front-rear direction is approximately the same as the thickness of the nut 200.

[0035] FIG. 2( b ) is a side view showing a state in which the nut 200 is attached to the second pipe 120 .

[0036] 2(b), the nut 200 is tightened to the end of the threaded portion 122. When the nut 200 is tightened to the end of the threaded portion 122, the front end of the nut 200 abuts against the rear end of the circumferential surface portion 123. This makes it impossible to tighten the nut 200 any further. When the nut 200 is then rotated in the tightening direction, the second pipe 120 rotates integrally with the nut 200.

[0037] 1, the nut 200 is made of a material such as synthetic resin. The shape of the nut 200 in a front view is a regular hexagon. A threaded portion 201 that meshes with the threaded portion 122 of the second pipe 120 is formed in the center of the nut 200.

[0038] The operation device 300 is a remote control installed in a bathroom. A circular recess 301 is formed at approximately the center of the back of the operation device 300. The inner diameter of the recess 301 is approximately the same as the outer shape of the first pipe 110. A threaded portion 302 that meshes with the threaded portion 111 of the first pipe 110 is formed on the inner surface of the recess 301. A connector 303 is disposed in the center of the recess 301. A two-core communication line is connected to the connector 303 to supply power to and communicate with the operation device 300. An annular edge portion 304 of a constant height is formed along the outer periphery of the recess 301.

[0039] The seal member 400 is for preventing water from entering the recess 301. The seal member 400 is a thin sheet-like member made of resin or the like. An opening 401 having approximately the same diameter as the outer diameter of the edge portion 304 on the operating device 300 side is formed in the center of the seal member 400. The opening 401 is shaped to fit into the outer periphery of the edge portion 304. An adhesive layer is formed on the front surface of the seal member 400.

[0040] The wall jig 500 includes a housing 510 and a metal sheet 520. When viewed from the front, the housing 510 and the metal sheet 520 have a rectangular shape that is long in the left-right direction. The housing 510 has a box shape with an open back side. The metal sheet 520 is fitted to the back side of the housing 510 and attached to the housing 510. The housing 510 is formed from a highly rigid material such as synthetic resin or metal.

[0041] A hole 521 penetrating from front to rear is formed in the approximate center of the metal plate 520. The diameter of hole 521 is slightly larger than the outer diameter of the threaded portion 122 and the peripheral portion 123 of the second pipe 120. A hole 511 (see FIG. 4) that is coaxial with and has the same diameter as hole 521 is also formed in the housing 510. Four hooks 522 are formed on the rear surface of the metal plate 520 for attaching a cover (not shown) that covers the rear surface of the housing 510.

[0042] When installing the operating device 300 on the wall of the bathroom, a hole for passing the stay pipe 100 is opened in the wall separating the bathroom from the outside of the bathroom. Next, the opening 401 of the seal member 400 is fitted into the edge portion 304 of the operating device 300, and the seal member 400 is attached to the back surface of the operating device 300. Furthermore, a two-core communication line is connected to the connector 303 of the operating device 300, and the two-core communication line is passed through the first pipe 110. Then, the threaded portion 111 of the first pipe 110 is engaged with the threaded portion 302 on the operating device 300 side, and the first pipe 110 is installed on the back surface of the operating device 300.

[0043] At this time, the worker holds the recess 113 and tightens the threaded portion 111 of the first pipe 110 to the threaded portion 302 of the manipulation device 300. The recess 113 functions as a slip prevention member when tightening. This allows the first pipe 110 to be firmly fixed to the back surface of the manipulation device 300.

[0044] Thereafter, the threaded portion 121 of the second pipe 120 is engaged with the threaded portion 112 of the first pipe 110, and the first pipe 110 and the second pipe 120 are integrated. At this time, the two-core communication line is passed through the second pipe 120. In this state, the second pipe 120 is passed from inside the bathroom through a hole in the wall. As a result, the rear end of the second pipe 120 is positioned outside the bathroom. The two-core communication line is also drawn out to the outside.

[0045] Outside the bathroom, the rear end of the second pipe 120 is passed through holes 511, 521 of the wall jig 500, and the wall jig 500 is placed on the outer surface of the wall. As a result, the rear part of the second pipe 120 protrudes to the outside from the hole 521. In this state, the nut 200 is engaged with the threaded part 122 of the second pipe 120, and the nut 200 is tightened. At this time, the two-core communication line is passed through the hole of the nut 200. As a result, the various components shown in FIG. 1 are integrated.

[0046] Fig. 3 is a perspective view showing a state in which the stay pipe 100 and the nut 200 are attached to the operating device 300. For convenience, the wall jig 500 is omitted from Fig. 3. Also, the two-core communication line is omitted from the illustration.

[0047] As described above, when the nut 200 is further tightened after being tightened to the end of the threaded portion 122 at the rear end of the second pipe 120, the second pipe 120 rotates together with the nut 200. This causes the threaded portion 121 of the second pipe 120 to mesh with the threaded portion 112 of the first pipe 110, and the distance L1 between the front surface of the nut 200 and the rear surface of the operating device 300 decreases. When this distance L1 reaches a distance corresponding to the thickness of the wall, the nut 200 and the operating device 300 sandwich the wall via the wall jig 500.

[0048] Fig. 4 is a side view showing a state in which the operating device 300 and the nut 200 sandwich the wall 600. For convenience, Fig. 4 shows only the area near the wall surface of the wall 600, and omits the illustration of the other areas of the wall 600. In the area of ​​the wall 600 that is not shown, the stay pipe 100 is shown. Also, a cross section of the wall jig 500 at the center position in the left-right direction is shown.

[0049] 4, the distance L0 between the front surface of the wall jig 500 and the rear surface of the operating device 300 is the same as the thickness of the wall 600. When the nut 200 is further tightened from this state, the second pipe 120 rotates together with the nut 200, and the stay pipe 100 shortens. This shortens the distance L1 between the front surface of the nut 200 and the rear surface of the operating device 300, and the stay pipe 100 pulls the operating device 300 backward. As a result, the rear surface of the operating device 300 is pressed against the side surface of the wall 600, and the operating device 300 is fixed to the wall 600.

[0050] At this time, the worker adjusts the tightening of the nut 200 so that the rear surface of the operating device 300 is pressed against the side surface of the wall 600 with an appropriate force. However, since it is difficult for the worker to properly judge how much the operating device 300 is pressed against the side surface of the wall 600, the worker may unintentionally overtighten the nut 200. If the nut 200 is overtightened, the rear surface of the operating device 300 is pulled excessively by the stay pipe 100, which may cause undesirable deformation or damage to the rear surface of the operating device 300.

[0051] In this embodiment, in order to avoid such a problem, the slit 124 is formed at the end of the second pipe 120 as described above.

[0052] 5(a) and (b) are diagrams showing the function of the slit 124. Fig. 5(a) is a cross-sectional view showing a state in which the nut 200 is properly tightened when the operating device 300 is attached. Fig. 5(b) is a cross-sectional view showing a state in which the nut 200 is excessively tightened when the operating device 300 is attached.

[0053] When the nut 200 is further tightened from the state shown in Fig. 5(a), a force is applied between the threaded portion 122 and the threaded portion 201 along the inclination of the thread groove. This force causes the end of the second pipe 120 to elastically deform in the direction in which the slit 124 narrows, that is, in the direction in which the diameter becomes smaller, as shown in Fig. 5(b). As a result, if the nut 200 is tightened excessively, the meshing between the threaded portion 122 and the nut 200 will be released due to this elastic deformation.

[0054] In this way, even if the nut 200 is tightened beyond a predetermined strength, the threaded portion 122 and the nut 200 are disengaged from each other, and excessive tension on the rear surface of the operating device 300 is avoided. Therefore, it is possible to prevent undesirable deformation or damage to the rear surface of the operating device 300 caused by excessive tightening of the nut 200.

[0055] When the threaded portion 122 and the nut 200 come out of engagement due to excessive tightening of the nut 200, the threaded portion 122 will re-engage with the threaded portion 201 on the nut 200 side at a position where the tightening is loosened due to its own elastic return. Therefore, if the operator determines that the tightening of the nut 200 is insufficient in that state, he or she can tighten the nut 200 again so that the operating device 300 is fixed with an appropriate pulling force.

[0056] <Effects of the embodiment> According to this embodiment, the following effects can be achieved.

[0057] As shown in Fig. 5(a) and (b), when the nut 200 is tightened beyond a predetermined strength from a state in which the wall 600 is sandwiched between the operating device 300 and the nut 200, the end of the stay pipe 100 on the nut 200 side is elastically deformed in the direction in which the slit 124 narrows, and the engagement between the threaded portion 122 and the nut 200 is released. Therefore, even if the worker tightens the nut 200 too much, the back surface of the operating device 300 can be prevented from being excessively pulled by the stay pipe 100. Therefore, it is possible to prevent undesirable deformation or damage to the back surface of the operating device 300 due to overtightening of the nut 200.

[0058] As shown in FIG. 1, two slits 124 are arranged in the circumferential direction of the end portion on the nut 200 side. In this way, by arranging two slits 124, the end portion on the nut 200 side of the stay pipe 100 is easily elastically deformed. Therefore, when the nut 200 is overtightened, the meshing between the threaded portion 122 of the stay pipe 100 and the nut 200 can be smoothly released. Therefore, it is possible to more reliably prevent undesired deformation or damage from occurring on the back surface of the operating device 300 due to overtightening of the nut 200.

[0059] As shown in Fig. 1, the two slits 124 are arranged at approximately equal intervals in the circumferential direction of the end portion on the nut 200 side. This allows the end portion on the nut 200 side of the stay pipe 100 to be elastically deformed approximately evenly in the circumferential direction when the nut 200 is overtightened, and allows the meshing between the threaded portion 122 of the stay pipe 100 and the nut 200 to be more smoothly released. This makes it possible to more reliably prevent undesired deformation or damage to the rear surface of the operating device 300 due to overtightening of the nut 200.

[0060] As shown in FIG. 1, the stay pipe 100 includes a first pipe 110 and a second pipe 120 that is screwed to the first pipe 110. An operating device 300 is installed on the first pipe 110, and a screw portion 122 and a slit 124 are formed on the second pipe 120. When the nut 200 is further tightened from a state in which the nut 200 is tightened to the end of the screw portion 122 formed on the second pipe 120, the second pipe 120 rotates with the rotation of the nut 200, and the screwing between the first pipe 110 and the second pipe 120 progresses, and the overall length of the stay pipe 100 becomes shorter. In this way, since the length of the stay pipe 100 is variable within a range in which the first pipe 110 and the second pipe 120 can be screwed to each other, the stay pipe 100 can be hung on a wall 600 of various thicknesses. Therefore, the operating device 300 can be installed on the wall surface of the wall 600 of various thicknesses.

[0061] As shown in FIG. 1 and FIG. 2(a) and (b), the slit 124 is formed to extend to a depth near the end of the threaded portion 122. According to this configuration, when the nut 200 is tightened to the end of the threaded portion 122, the slit 124 extends to most of the range of the end where the nut 200 is screwed. Therefore, when the nut 200 is further tightened and a large force is applied to the meshing position between the nut 200 and the threaded portion 122, as shown in FIG. 5(b), the range of the end where the nut 200 is screwed is smoothly elastically deformed, and the meshing between the nut 200 and the threaded portion 122 is easily released appropriately. Therefore, it is possible to reliably prevent undesirable deformation or damage to the back of the operating device 300 due to overtightening of the nut 200.

[0062] <Example of change> In the above embodiment, two slits 124 are provided at equal intervals in the circumferential direction at the end of the stay pipe 100 on the nut 200 side, but the number and arrangement of the slits 124 provided at the end are not limited to this.

[0063] For example, as shown in FIG. 6(a), only one slit 124 may be provided at the end, or, as shown in FIG. 6(b), four slits 124 may be provided at the end.

[0064] However, as shown in FIG. 6(a), when only one slit 124 is provided, the end of the stay pipe 100 is less likely to elastically deform than when two slits 124 are provided as in the above embodiment. On the other hand, as shown in FIG. 6(b), when four slits 124 are provided, the end of the stay pipe 100 is more likely to elastically deform than when two slits 124 are provided as in the above embodiment. Therefore, when the stay pipe 100 is made of a material that is easily elastically deformed, the number of slits 124 may be reduced as shown in FIG. 6(a), and when the stay pipe 100 is made of a material that is not easily elastically deformed, the number of slits 124 may be increased as shown in FIG. 6(b). The number of slits 124 may be set in consideration of the material of the stay pipe 100 so that the end is elastically deformed when the nut 200 is tightened excessively, and the meshing between the threaded portion 122 and the nut 200 is appropriately released.

[0065] In addition, even when three or more slits 124 are provided at the end, it is preferable to arrange the slits 124 at approximately equal intervals in the circumferential direction, for example, as shown in Fig. 6(b). This allows the end of the stay pipe 100 on the nut 200 side to be elastically deformed approximately evenly in the circumferential direction when the nut 200 is overtightened, and allows the threaded portion 122 of the stay pipe 100 and the nut 200 to be smoothly disengaged from each other.

[0066] In the above embodiment, the slits 124 extend to a depth near the end of the threaded portion 122, but the depth of the slits 124 is not limited to this. For example, as shown in Figures 6(c) and 6(d), the slits 124 may extend deeper than the depth of the end of the threaded portion 122.

[0067] In this way, when the nut 200 is tightened to the end of the threaded portion 122, the range of the end into which the nut 200 is screwed is more easily elastically deformed. Therefore, when the nut 200 is tightened too much and a large force is applied to the meshing position between the nut 200 and the threaded portion 122, the meshing between the nut 200 and the threaded portion 122 can be more reliably released. Therefore, it is possible to more reliably prevent the rear surface of the operating device 300 from being undesirably deformed or damaged due to the nut 200 being tightened too much.

[0068] However, the deeper the slit 124, the easier it is for the end portion to elastically deform in the direction in which the slit 124 narrows. Therefore, by tightening the nut 200 more loosely, the meshing between the threaded portion 122 and the nut 200 becomes easier to come off. On the other hand, the nut 200 needs to be tightened without coming off the meshing with the threaded portion 122 until the rear surface of the operating device 300 is pressed against the wall surface with an appropriate force. Therefore, the depth of the slit 124 may be set so that the meshing between the threaded portion 122 and the nut 200 is appropriately released when the nut 200 is tightened excessively while the rear surface of the operating device 300 is pressed against the wall surface with an appropriate force.

[0069] In the above embodiment, the stay pipe 100 is configured by the first pipe 110 and the second pipe 120, but the configuration of the stay pipe 100 is not limited to this.

[0070] For example, as shown in FIG. 7, the stay pipe 100 may be formed of one pipe. In this case, the stay pipe 100 is integrally formed of an elastically deformable material such as synthetic resin. A threaded portion 101 that engages with a threaded portion 302 of an operating device 300 is formed on the outer periphery of the front end of the stay pipe 100, and a threaded portion 102 that engages with a nut 200 is formed on the outer periphery of the rear end of the stay pipe 100. A width W1 in which the threaded portion 102 is formed is wider than the width in which the threaded portion 122 is formed in the above embodiment. Two slits 103 are formed at the end on the nut 200 side. The slits 103 extend to a depth near the end of the threaded portion 102.

[0071] FIG. 8 is a diagram showing a schematic diagram of a state in which the operating device 300 is installed on a wall 600 by using the stay pipe 100 shown in FIG.

[0072] 8, in this configuration example as well, the wall 600 is sandwiched between the nut 200 and the operating device 300. When the nut 200 is tightened, the distance L1 between the nut 200 and the operating device 300 is reduced. As a result, the rear surface of the operating device 300 is pressed against the side surface of the wall 600, and the operating device 300 is fixed to the side surface of the wall 600. In this configuration, it is possible to accommodate changes in the thickness of the wall 600 within the range of the width W1 of the screw portion 102.

[0073] In this case as well, if the nut 200 is tightened excessively, the end of the stay pipe 100 is elastically deformed in the direction narrowing the slit 103, and the threaded portion 102 is disengaged from the nut 200. This makes it possible to avoid undesirable deformation or damage to the back surface of the operating device 300 due to excessive tightening of the nut 200.

[0074] As in the above embodiment, in the configuration examples of FIGS. 7 and 8, the number, arrangement and depth of the slits 103 can be changed as appropriate.

[0075] In the above embodiment, the end of the first pipe 110 is attached to the rear surface of the operation device 300 by engaging the threaded portion 111 of the first pipe 110 with the threaded portion 302 of the operation device 300, but the method of attaching the end of the first pipe 110 to the rear surface of the operation device 300 is not limited to this. For example, as in the above Patent Document 1, the end of the first pipe 110 may be fixed to the rear surface of the operation device 300 by engaging a flange with an engaging portion.

[0076] In the above embodiment, the second pipe 120 is configured to fit inside the first pipe 110, but the stay pipe 100 may be configured so that the first pipe 110 fits inside the second pipe 120. In this case, the outer diameter of the second pipe 120 is set to be larger than that of the first pipe 110. Also, a threaded portion is formed on the rear outer surface of the first pipe 110, and a threaded portion that meshes with the threaded portion on the first pipe 110 side is formed on the front inner surface of the second pipe 120.

[0077] Furthermore, the configuration of the wall jig 500 is not limited to that of the above embodiment. For example, the housing 510 may be omitted, and the wall jig 500 may be formed only by the metal plate 520.

[0078] In addition, the operating device 300 fixed to the wall surface is not limited to a remote control for a water heater installed in a bathroom, but may be another type of operating device installed on a wall of a predetermined thickness. When the operating device 300 is an operating device used in an environment where water cannot enter, the seal member 400 may be omitted.

[0079] In the above embodiment, the stay pipe 100 and the nut 200 are included in the mounting kit 10 as the minimum unit of the mounting kit 10, but other members than the stay pipe 100 and the nut 200 may be further included in the mounting kit 10. For example, the sealing member 400 and the wall jig 500 may be included in the mounting kit 10.

[0080] In addition, the embodiments of the present invention can be modified in various ways as appropriate within the scope of the claims. [Explanation of symbols]

[0081] 10 Installation Kit 100 Stay pipe 110 First Pipe 120 Second Pipe 102, 122 Threaded part 103, 124 Slit 200 Nuts 300 operating machine 600 wall

Claims

1. A stay pipe for installing an operating device fixed to one end on a side surface of a wall, a threaded portion formed on the other end portion and engaged with a nut; a slit formed in the other end, When the nut is tightened beyond a predetermined strength with the operating device and the nut sandwiching the wall, the other end is elastically deformed in a direction in which the slit narrows, and the engagement between the screw portion and the nut is released. A stay pipe characterized by the above.

2. In the stay pipe according to claim 1, The slits are arranged in a plurality in the circumferential direction of the other end portion. A stay pipe characterized by the above.

3. The stay pipe according to claim 1 or 2, A first pipe; A second pipe screwed to the first pipe, The operating device is installed in the first pipe, The second pipe is formed with the threaded portion and the slit, When the nut is further tightened from a state in which the nut is tightened to the end of the threaded portion formed on the second pipe, the second pipe rotates with the rotation of the nut, the screw engagement between the first pipe and the second pipe advances, and the overall length of the stay pipe becomes shorter. A stay pipe characterized by the above.

4. In the stay pipe according to claim 3, The slit extends at least to a depth near the end of the threaded portion. A stay pipe characterized by the above.

5. The stay pipe according to claim 4, The slit extends deeper than the depth of the end of the screw portion. A stay pipe characterized by the above.

6. The stay pipe according to any one of claims 1 to 5, The operating device is an operating device for a water heater installed in a bathroom, The wall is a wall between the bathroom and the outside of the bathroom. A stay pipe characterized by the above.

7. A stay pipe according to any one of claims 1 to 6, The nut.

13. An installation kit for an operating device, comprising:

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