Mounting fixture

Abstract

To improve easiness to use.SOLUTION: A fixture 20 is provided with a lower protruding portion 32 that protrudes toward the outer peripheral side, and an upper protruding portion 30 that protrudes toward the outer peripheral side from the lower protruding portion 32 on the side of an attachment / detachment direction Dd opposite to a mounting direction Df, wherein a protrusion arrangement rotation angle Ar, which is an angle between the lower protruding portion 32 and the upper protruding portion 30 in a circumferential direction around a central axis Caf of the fixture, is made to be 40[°] or more and 75[°] or less.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a mounting fixture, and is suitably applied to a mounting fixture that is attached to, for example, a cone-shaped safety device. [Background technology]

[0002] Conventionally, when traffic restrictions are imposed on expressways and the like for road construction, accident handling, and the like, safety devices, such as cone-shaped safety devices, are installed on the road at predetermined intervals along the vehicle restriction section as signage devices to inform drivers of the traffic restrictions. Some of these safety devices are equipped with sensors that detect when a vehicle collides with the safety device or when the safety device falls over, and communicate this to workers, allowing them time to ensure their safety (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-170702 A Summary of the Invention [Problem to be solved by the invention]

[0004] It is desirable to improve the ease of use of such fittings.

[0005] The present invention has been made in consideration of the above points, and aims to propose a mounting fixture that can improve usability. [Means for solving the problem]

[0006] In order to solve such problems, the mounting tool of the present invention is a mounting tool that is attached to a device to be mounted by moving a protrusion in a mounting direction along the central axis so that the protrusion fits into the groove, the mounting tool having an upper open end, a groove formed over a predetermined circumferential range and a predetermined axial range along the central axis, and recessed from the inner circumference side toward the outer circumference side, the mounting tool having a first protrusion protruding toward the outer circumference side, and a second protrusion protruding toward the outer circumference side on the side of the first protrusion in the attachment / detachment direction opposite to the attachment direction, a hollow shaft portion that extends along a central axis, has an end portion on the attachment / detachment direction side that is open, and that enters the inside of the attachment target device when the attachment tool is attached to the attachment target device, and has a first protrusion and a second protrusion protruding from an outer circumferential surface; and a slit that is formed from the attachment / detachment direction side end portion of the shaft portion toward the attachment direction side on the attachment / detachment direction side of the first protrusion. The angle between the first protruding portion and the second protruding portion in the circumferential direction about the central axis is set to be equal to or greater than 40 degrees and equal to or less than 75 degrees.

[0007] As a result, the present invention can improve the ease of attachment to the device to which the attachment is applied while ensuring a holding force for the device to which the attachment is applied.

[0008] In addition, the mounting tool of the present invention is a mounting tool that is attached to a device to which the upper end is open and that has a groove portion at its upper end that is formed over a predetermined circumferential range and a predetermined axial range along the central axis and is recessed from the inner circumference side to the outer circumference side by moving the protrusion in the mounting direction along the central axis so that the protrusion enters the groove, and the end that extends along the central axis and is on the detachment direction side that is the opposite direction to the mounting direction is open, and the mounting tool has a hollow shaft portion that enters the inside of the device to which the mounting tool is attached when in an attached state, a first protrusion that protrudes outward from the outer circumferential surface of the shaft portion, and a slit formed from the detachment direction end of the shaft portion toward the mounting direction side, on the detachment direction side of the first protrusion.

[0009] As a result, the present invention allows the shaft portion to be inserted into the internal space in the shaft portion of the other mounting fixture so that the first protrusion of the shaft portion fits into the slit of the other mounting fixture, thereby allowing multiple mounting fixtures to be stacked along the axial direction, reducing the area they occupy in the axial direction. Effect of the Invention

[0010] According to the present invention, a mounting tool that can improve usability can be realized. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a front view showing the configuration of the rubber cone, the mounting fixture, and the sensor. [Diagram 2] FIG. 1 is a plan view showing the rubber cone configuration (1). [Diagram 3] FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, showing the rubber cone configuration (2). [Figure 4] FIG. 1 is a perspective view showing the configuration (1) of a mounting fixture. [Diagram 5] FIG. 1 is a perspective view showing the configuration (2) of the mounting fixture. [Figure 6] FIG. 13 is a front view showing the mounting fixture configuration (3). [Figure 7] FIG. 11 is a plan view showing the mounting fixture configuration (4). [Figure 8] 11 is a plan view showing the positional relationship between an upper protrusion and a lower protrusion. FIG. [Figure 9] FIG. 2 is a perspective view showing the configuration of the mounting fixture in a stacked state. [Figure 10] FIG. 13 is a perspective view showing how the mounting fixture is attached to the rubber cone. [Figure 11] FIG. 2 is a plan view showing how rubber cones are placed on a road. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, modes for carrying out the invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

[0013] [1. Rubber cone structure] As shown in Figures 1, 2 and 3, a rubber cone 1 as a safety device is a substantially conical cone made of rubber or the like, and has a bottom part 2 formed on the lower side and a main body part 4 formed on the upper side as a whole. This rubber cone 1 is a so-called cut cone, with a cylindrical opening at the top for attaching construction equipment such as a construction light. As shown in Figure 11, when traffic restrictions are imposed on a highway or the like, the rubber cones 1 are placed on the road RD at predetermined intervals over the vehicle restriction section, and function as a sign device that informs the driver of a traveling vehicle VH that a traffic restriction is in place.

[0014] In the following description, the direction in which the sensor 60 is located relative to the cone central axis Cac, which is the central axis of the rubber cone 1 in an upright state with the mounting fixture 20 (FIG. 1) attached when viewed from above, is defined as the rear side (back side), the direction in which the cone central axis Cac of the rubber cone 1 is located relative to the sensor 60 is defined as the front side (front side), the left and right sides as viewed from the operator facing the front of the rubber cone 1 are defined as the left and right sides, respectively, and the upper and lower sides are further defined for explanation. In the following description, the direction along the vertical direction of the rubber cone 1 in an upright state and parallel to the cone central axis Cac of the rubber cone 1 is defined as the axial direction. In addition, the central axis of the mounting fixture 20 along the vertical direction of the mounting fixture 20 attached to the upright rubber cone 1 is defined as the mounting fixture central axis Caf. In the attached state, the cone central axis Cac and the mounting fixture central axis Caf are coincident (FIG. 1). In the following description, the cone central axis Cac and the mounting fixture central axis Caf are collectively referred to as the central axis Ca. Furthermore, the direction along the outer circumference of the main body 4 (described later) of the rubber cone 1 with the central axis Ca as the axis when the mounting fixture 20 and the rubber cone 1 are viewed in a plan view is defined as the circumferential direction. Regarding the axial direction, the direction in which the mounting fixture 20 approaches the rubber cone 1 from the upper side downward when the mounting fixture 20 is attached to the rubber cone 1 is also called the attachment direction Df, and the direction in which the mounting fixture 20 moves away from the rubber cone 1 upward when the mounting fixture 20 is detached from the rubber cone 1 is also called the detachment direction Dd. Furthermore, the direction approaching the central axis Ca while being perpendicular to the circumferential direction when viewed from the central axis Ca is defined as the inner circumferential direction, and the direction moving away from the central axis Ca while being perpendicular to the circumferential direction when viewed from the central axis Ca is defined as the outer circumferential direction. Furthermore, the direction perpendicular to the axial direction and along the inner circumferential direction and the outer circumferential direction is also called the radial direction. Furthermore, regarding the radial direction, the side approaching the central axis Ca is also called the inner side or inner circumferential side, and the side moving away from the central axis Ca is also called the outer side or outer circumferential side.

[0015] The bottom 2 is rectangular in plan view, thin at the top and bottom, with a circular opening in the center, and when the rubber cone 1 is placed on a road, its underside comes into contact with the road.

[0016] The main body 4 is a hollow cone having a predetermined thickness, and stands from the bottom 2 along the cone central axis Cac. The main body 4 has an internal space 6 in the shape of a truncated cone with an open upper end and lower end. The main body 4 has an upper end (i.e., top) cut off along the horizontal direction, and an opening 8 having a circular shape in a plan view is formed at the upper end. On the outer periphery side of the opening 8, an upper edge surface 10, which is a flat surface having an annular shape (ring shape) in a plan view along the horizontal direction, is formed with a width equal to the thickness of the main body 4. The main body 4 has a fitting surface 12, which is a cylindrical inner wall surface that extends from the upper end (i.e., upper edge surface 10) of the main body 4 along the axial direction (vertical direction) by the groove length L1 (FIG. 3) in the mounting direction Df.

[0017] Furthermore, the main body 4 is formed with a groove 14. The groove 14 is a recess recessed from the fitting surface 12 toward the outer periphery to a radial depth of about half the thickness of the main body 4, and is formed along the circumferential direction over a circumferential range of about 30° in a plan view. The groove 14 is continuously formed from the upper end (i.e., the upper edge surface 10) of the main body 4 along the axial direction by the groove length L1 toward the mounting direction Df. The main body 4 is also formed with a protrusion locking surface 16, which is a flat surface facing the mounting direction Df side along the horizontal direction, at a location other than the groove 14 in the circumferential direction at the same axial position as the lower end of the groove 14. Therefore, the protrusion locking surface 16 is formed to face the mounting direction Df side at a position from the upper edge surface 10 along the axial direction by the groove length L1 toward the mounting direction Df.

[0018] In this configuration, the rubber cone 1, which is the component to which the mounting fixture is to be attached, is moved in a downward attachment direction Df from the top to the bottom of the rubber cone 1 while the mounting fixture 20 is held by an operator, and the mounting fixture 20 is inserted into the internal space 6 through the opening 8 while being rotated appropriately, thereby attaching the mounting fixture 20 to the rubber cone 1 (details will be described later).

[0019] [2. Configuration of mounting fixture] As shown in Figures 4, 5, 6 and 7, the mounting fixture 20 is formed from resin and has a shape resembling the capital letter "T" when viewed from the side. As a whole, the mounting fixture 20 has a shaft portion 22 formed on the lower side (the side facing the mounting direction Df) and a main body portion 40 formed on the upper side (the side facing the mounting direction Dd).

[0020] [2-1. Shaft configuration] The shaft portion 22 extends along the axial direction and is hollow and generally truncated cone-shaped with an opening on the attachment / detachment direction Dd side, and has an internal space 24 generally shaped like a truncated cone. The shaft portion 22 is a portion that is not exposed to the outside of the rubber cone 1 by being stored in the internal space 6 of the rubber cone 1 in the attached state, and has a fitting portion 26 on the upper side and an overlapping insertion portion 28 on the lower side. The central axis of the shaft portion 22 is the attachment central axis Caf.

[0021] [2-1-1. Fitting configuration] The fitting portion 26 occupies about half of the shaft portion 22 on the attachment / detachment direction Dd side, and has a cylindrical shape with an outer diameter slightly narrower than the inner diameter of the opening 8 in the rubber cone 1. The fitting portion 26 fits into the inner periphery of the fitting surface 12 in the attached state.

[0022] [2-1-2. Configuration of insertion part when overlapping] The overlapping insertion portion 28 occupies about half of the range on the mounting direction Df side of the shaft portion 22, and has a truncated cone shape tapering toward the mounting direction Df with its end on the mounting / removal direction Dd side being shorter than the outer diameter of the fitting portion 26. This overlapping insertion portion 28 is located on the mounting direction Df side of the fitting surface 12 in the mounted state, and enters the internal space 24 on the inner periphery side of the fitting portion 26 of the other mounting tool 20 in the overlapping state (described later).

[0023] [2-1-3. Configuration of protruding parts] From the end of the fitting portion 26 on the mounting direction Df side, i.e., the outer peripheral surface of the shaft portion 22 at the approximate center in the axial direction, an upper protrusion 30 having a generally rectangular parallelepiped shape with the outer peripheral side open protrudes toward the outer peripheral side. The outer peripheral end of the upper protrusion 30 protrudes toward the outer peripheral side from the outer peripheral surface of the end of the overlapping insertion portion 28 on the mounting direction Df side. When viewed from above the mounting fixture central axis Caf, the upper protrusion 30 is located at a position rotated 180[°] with respect to the sensor 60 (described later) about the mounting fixture central axis Caf, that is, on the opposite side of the sensor 60 with respect to the mounting fixture central axis Caf. The axial distance between the main body mounting surface 42S (described later) and the end face of the upper protrusion 30 on the mounting / removal direction Dd side is the bottom surface upper protrusion distance L2 (FIG. 6). This bottom surface upper protrusion distance L2 is set to be slightly longer than the groove length L1.

[0024] Furthermore, a lower protrusion 32 having a generally rectangular parallelepiped shape with the outer circumferential side open protrudes outward from the mounting direction Df side end of the overlapping insertion portion 28, i.e., the outer circumferential surface of the mounting direction Df side end of the shaft portion 22. A protrusion interval L3, which is the axial interval between the mounting direction Df side end face of the upper protrusion 30 and the removal direction Dd side end face of the lower protrusion 32, is set to be slightly longer than the groove length L1.

[0025] In this way, the shaft portion 22 is formed with the upper protrusion 30 on the detachment direction Dd side and the lower protrusion 32 on the mounting direction Df side. As shown in a simplified manner in FIG. 8, the rotation angle along the circumferential direction between the upper protrusion 30 and the lower protrusion 32 with the mounting center axis Caf as the axis when viewed from above the mounting center axis Caf is the protrusion arrangement rotation angle Ar. When viewed from the detachment direction Dd side on the mounting center axis Caf, the lower protrusion 32 is disposed at a position rotated clockwise by the protrusion arrangement rotation angle Ar with respect to the upper protrusion 30. Here, it has been clarified by the inventors' experiments that in order for the mounting device 20 to not come off the rubber cone 1 even when the vehicle VH collides with the rubber cone 1, it is sufficient for the protrusion arrangement rotation angle Ar to be 40° or more. Furthermore, the inventors' experiments have revealed that the protrusion arrangement rotation angle Ar should be 75° or less as an angle at which a worker can attach the mounting fixture 20 to the rubber cone 1 with a single twist (i.e., an angle at which the attachment work is not complicated). For this reason, the protrusion arrangement rotation angle Ar is preferably in the range of 40° to 75°, and in this embodiment, the protrusion arrangement rotation angle Ar is set to 45°.

[0026] [2-1-4. Slit configuration] Furthermore, the fitting 20 has a stacking slit 34 formed along the axial direction on the side of the lower protrusion 32 in the attachment / detachment direction Dd in the fitting portion 26 of the shaft portion 22. The stacking slit 34 is disposed at the same circumferential position as the lower protrusion 32. The stacking slit 34 has an end on the attachment / detachment direction Dd side formed on the bottom portion 42 of the main body portion (described later), an end on the attachment / detachment direction Dd side is open, and extends along the axial direction toward the mounting direction Df to approximately the length of the stacking insertion portion 28 so as to perforate the shaft portion 22, thereby communicating the internal space 24 of the shaft portion 22 with the space on the outer periphery side, and an end on the mounting direction Df side is closed. Furthermore, the stacking slit 34 is an opening on the bottom portion 42 of the main body portion (described later) that is similar in shape to the lower protrusion 32 when viewed from the attachment / detachment direction Dd side and has a slightly larger circumferential width.

[0027] As shown in Fig. 9, the lower protrusion 32 of the other mounting fixture 20 arranged on the upper side in Fig. 9, other than the one mounting fixture 20 arranged on the lower side in Fig. 9 in which the overlapping slit 34 is formed, enters from the attachment / detachment direction Dd side, thereby inserting the overlapping insertion portion 28 of the other mounting fixture 20 into the internal space 24 of the fitting portion 26 of the one mounting fixture 20. This allows the mounting fixtures 20 to be stacked in the axial direction. Hereinafter, this state will be referred to as a stacked state. In this stacked state, the end face of the upper protrusion 30 of the other mounting fixture 20 on the mounting direction Df side abuts against the main body mounting surface 42S (described later) of the one mounting fixture 20.

[0028] [2-1-5. Drainage hole configuration] Furthermore, the mounting fixture 20 has a drainage hole 29 formed at the end of the shaft portion 22 on the mounting direction Df side. The drainage hole 29 is circular, and connects the internal space 24 of the shaft portion 22 to a space on the mounting direction Df side of the shaft portion 22. This drainage hole 29 drains rainwater, etc. that has entered the internal space 24 via the main body bottom opening 42a (described later) and the overlapping slits 34 to the outside of the internal space 24, preventing rainwater, etc. from being retained and pooling in the internal space 24, thereby ensuring the performance of the sensor 60.

[0029] [2-2. Main body configuration] The main body 40 is mainly formed with a main body bottom 42, a main body outer wall 44, and a sensor holding portion 50, and is the portion that is exposed to the outside of the rubber cone 1 when attached.

[0030] [2-2-1. Configuration of the bottom of the main body] The body bottom 42 is shaped like a capital letter "U" when viewed along the axial direction, is connected to the end of the fitting portion 26 of the shaft portion 22 on the side in the attachment / detachment direction Dd, and is a plate-like member that is thin in the axial direction and extends from the end of the fitting portion 26 on the side in the attachment / detachment direction Dd to the outer periphery. Therefore, the body bottom 42 has an outer diameter larger than that of the shaft portion 22, that is, is formed to have an outer diameter larger than the inner diameter of the opening 8 of the rubber cone 1. A body bottom opening 42a is formed in the center of the body bottom 42, which communicates the internal space 24 of the shaft portion 22 with the side on the attachment / detachment direction Dd side of the shaft portion 22 and opens the internal space 24 to the attachment / detachment direction Dd side.

[0031] Furthermore, a body mounting surface 42S, which is a flat surface along the radial direction, is formed on the side of the mounting direction Df of the body bottom 42. This body mounting surface 42S abuts against the upper edge surface 10 of the rubber cone 1 when the mounting fixture 20 is mounted to the rubber cone 1. As a result, when the mounting fixture 20 is in the mounted state, the body bottom 42 is hooked onto the upper edge surface 10 of the rubber cone 1, preventing the mounting fixture 20 from falling into the internal space 6 of the rubber cone 1.

[0032] [2-2-2. Structure of the outer wall of the main body] [2-2-2-1. Overall structure of the outer wall of the main body] The main body outer wall 44 stands perpendicularly from the outer periphery of the main body bottom 42 in the attachment / detachment direction Dd. The main body outer wall 44 has an arc shape along a part of a circle concentric with the main body bottom opening 42a on the opposite side (the front side rotated 180°) of the mounting central axis Caf from the sensor holding portion 50, and the width increases toward both ends in the left-right direction of the sensor holding portion 50. In addition, a main body outer side surface 44S, which is a surface facing the outer periphery along the axial direction, is formed on the outer periphery side of the main body outer wall 44.

[0033] [2-2-2-2. Configuration of the marker section] An upper protrusion mark 46 and a lower protrusion mark 48 are formed on the main body outer wall 44. The upper protrusion mark 46 as a second mark is formed at the same position as the upper protrusion 30 in the circumferential direction, and has an upper protrusion mark upper side portion 46u and an upper protrusion mark side portion 46s. The upper protrusion mark upper side portion 46u protrudes from the upper end portion of the main body outer wall 44 in the attachment / detachment direction Dd. The upper protrusion mark side portion 46s protrudes outward from near the upper end portion of the main body outer side surface 44S to the lower end portion.

[0034] The lower protrusion mark 48 as a first mark portion is formed at the same position as the lower protrusion 32 in the circumferential direction, and has a lower protrusion mark upper side portion 48u and a lower protrusion mark side portion 48s. The lower protrusion mark upper side portion 48u protrudes from the upper end portion of the main body portion outer wall portion 44 in the removal direction Dd by the same height as the upper protrusion mark upper side portion 46u. The lower protrusion mark side portion 48s protrudes in the removal direction Dd in the vicinity of the lower end portion of the main body portion outer surface 44S by the same height as the upper protrusion mark upper side portion 46u.

[0035] In this way, the upper protrusion mark 46 and the lower protrusion mark 48 are formed on the outer wall 44 of the main body at the same circumferential positions corresponding to the upper protrusion 30 and the lower protrusion 32, respectively. Therefore, even if the upper protrusion 30 and the lower protrusion 32 are stored in the internal space 6 of the rubber cone 1 in the attached state, and the upper protrusion 30 and the lower protrusion 32 are not exposed to the outside of the main body 4, and the worker cannot visually check the upper protrusion 30 and the lower protrusion 32, the upper protrusion mark 46 and the lower protrusion mark 48 can be exposed to the outside of the rubber cone 1. As a result, the attachment 20 allows the worker to visually recognize the rotational positions of the upper protrusion 30 and the lower protrusion 32 in the circumferential direction when attached, and can be used as a guide for the operation when attaching and detaching the attachment 20 to the rubber cone 1.

[0036] Moreover, the upper protrusion mark side portion 46s extends from near the upper end to the lower end of the main body outer surface 44S, whereas the lower protrusion mark side portion 48s is formed only near the lower end of the main body outer surface 44S. Therefore, the mounting tool 20 can make the axial positional relationship between the actual upper protrusion 30 and the lower protrusion 32 correspond to the axial positional relationship between the upper protrusion mark side portion 46s and the lower protrusion mark side portion 48s. This allows the mounting tool 20 to allow the worker to visually recognize the axial positions of the upper protrusion 30 and the lower protrusion 32 in the attached state.

[0037] [2-2-3. Structure of the sensor holder] The sensor holding portion 50 is located at a position rotated 180[°] relative to the upper protrusion 30 about the mounting fixture central axis Caf, i.e., on the opposite side of the upper protrusion 30 about the mounting fixture central axis Caf. Therefore, the sensor holding portion 50 and the sensor 60 held by the sensor holding portion 50 are not located on the mounting fixture central axis Caf, but are located at a position spaced away from the mounting fixture central axis Caf to the outer circumferential side.

[0038] The sensor holding part 50 has a cross section along the axial direction that is generally shaped like a capital letter "U" with the outer periphery open, and is provided with a sensor side abutment part 50a, a sensor protection visor 50b, and a sensor holding bottom part 50c. The sensor side abutment part 50a is a plate-like member having a flat surface facing the outer periphery, and the sensor 60 is screwed to the sensor side abutment part 50a. The sensor protection visor 50b is a plate-like member that protrudes from the end of the sensor side abutment part 50a in the attachment direction Dd toward the outer periphery at a right angle, and prevents the sensor 60 from being directly subjected to an external impact in the attachment direction Dd of the sensor side abutment part 50a. The sensor holding bottom part 50c is a plate-like member that protrudes from the end of the sensor side abutment part 50a in the attachment direction Df toward the outer periphery at a right angle. The sensor 60 is detachable from the sensor holding part 50.

[0039] [2-3. Sensor configuration] The sensor 60 as a communication device is, for example, a sensor that detects vibrations and tilts with a wireless communication function, and when it detects abnormal vibrations or tilts, it determines that the rubber cone 1 has fallen over and notifies a predetermined warning notification terminal by a wireless communication unit. When a predetermined notification is received from the sensor 60, the warning notification terminal issues an alarm.

[0040] [3. Attaching the fixture to the rubber cone] In this configuration, the procedure for attaching the mounting tool 20 held by an operator to the rubber cone 1 will be described with reference to Fig. 10. First, with the mounting tool 20 positioned above the rubber cone 1 in the upright position (the side in the attachment / detachment direction Dd), the lower protrusion 32 of the mounting tool 20 is aligned with the groove 14 of the rubber cone 1 in the circumferential direction. Next, as shown in Fig. 10(A), the mounting tool 20 is moved in the attachment direction Df (downward) until the upper protrusion 30 of the mounting tool 20 is caught by the upper edge surface 10 of the rubber cone 1 and the mounting tool 20 does not move any further in the attachment direction Df, and the shaft portion 22 of the mounting tool 20 is inserted into the internal space 6 from the opening 8 of the rubber cone 1. As described above, the protrusion spacing L3 is set slightly longer than the groove length L1, so that in the state shown in Figure 10 (B), the end face of the lower protrusion 32 of the mounting fixture 20 on the side facing the attachment / detachment direction Dd is positioned on the attachment direction Df side of the protrusion engagement surface 16 of the rubber cone 1.

[0041] Next, when the upper protrusion 30 of the mounting fixture 20 is caught by the upper edge surface 10 of the rubber cone 1 and the mounting fixture 20 does not move any further in the mounting direction Df, the mounting fixture 20 is rotated by 45°, which is the protrusion arrangement rotation angle Ar, toward the mounting rotation direction Drf, which is clockwise in a plan view, as shown in Fig. 10(B). This results in a state in which the circumferential positions of the upper protrusion 30 of the mounting fixture 20 and the groove portion 14 of the rubber cone 1 are aligned. In this state shown in Fig. 10(C), the end face of the lower protrusion 32 of the mounting fixture 20 on the removal direction Dd side faces the protrusion locking surface 16 of the rubber cone 1 in the vertical direction.

[0042] Next, as shown in FIG. 10(C), the mounting tool 20 is moved in the mounting direction Df, and the shaft portion 22 of the mounting tool 20 is further inserted into the internal space 6 from the opening 8 of the rubber cone 1, and the body mounting surface 42S (FIGS. 5 and 6) of the mounting tool 20 comes into contact with the upper edge surface 10 (FIGS. 2 and 3) of the rubber cone 1. As described above, the bottom surface upper protrusion interval L2 is set slightly longer than the groove length L1, so that in this mounting state, the end surface of the upper protrusion 30 of the mounting tool 20 on the detachment direction Dd side is located on the mounting direction Df side of the protrusion locking surface 16 of the rubber cone 1. Therefore, the upper protrusion 30 of the mounting tool 20 is located on the mounting direction Df side of the groove 14, and the mounting tool 20 becomes rotatable relative to the rubber cone 1. In this mounting state, the mounting tool 20 is rotated appropriately in the circumferential direction relative to the rubber cone 1, and the orientation of the mounting tool 20 is adjusted. When the orientation of the mounting fixture 20 is adjusted, the end faces of the lower protrusion 32 and the upper protrusion 30 of the mounting fixture 20 facing the attachment / detachment direction Dd are vertically opposed to the protrusion engagement surface 16 of the rubber cone 1.

[0043] [4. Positional relationship between the rubber cone and the sensor when the rubber cone is installed] 11, the mounting fixture 20 is arranged in such a direction that the sensor 60 is located on the vehicle travel direction Dv side, which is the travel direction of the vehicle VH traveling on the road RD, with respect to the rubber cone 1 installed at the side of the road RD; that is, the orientation of the mounting fixture 20 is adjusted so that the sensor 60 faces the vehicle travel direction Dv side with respect to the rubber cone 1. Therefore, the mounting fixture 20 is in a state where the main body 40 of the mounting fixture 20 and the rubber cone 1 are sandwiched between the mounting fixture 20 and the vehicle VH traveling in the vehicle travel direction Dv. Therefore, the mounting fixture 20 can prevent the sensor 60 from directly contacting the vehicle VH and being destroyed when the vehicle VH traveling in the vehicle travel direction Dv collides with the rubber cone 1 or the mounting fixture 20.

[0044] [5. Effects, etc.] In the above configuration, the mounting fixture 20 has a protrusion arrangement rotation angle Ar, which is a rotation angle between the upper protrusion 30 and the lower protrusion 32 in the circumferential direction about the mounting fixture central axis Caf, set to 45°, which is equal to or greater than 40°. Therefore, when the mounting fixture 20 is attached to the rubber cone 1, the circumferential positions of the lower protrusion 32 and the groove 14 are aligned, and the mounting fixture 20 is rotated in the mounting rotation direction Drf by the protrusion arrangement rotation angle Ar as shown in FIG. 10(C) from a state in which the mounting fixture 20 is inserted to a state in which the end face of the lower protrusion 32 on the detachment direction Dd side is located on the mounting direction Df side of the protrusion locking surface 16 of the rubber cone 1 (FIG. 10(B)). By setting the protrusion arrangement rotation angle Ar to 40° or more in this way, the mounting fixture 20 can extremely reduce the possibility that the groove 14 and the lower protrusion 32 will be aligned in the circumferential direction even if an impact is applied to the rubber cone 1 and the mounting fixture 20 in the attached state and the mounting fixture 20 rotates relative to the rubber cone 1. Therefore, the mounting fixture 20 maintains a state in which the end face on the attachment / detachment direction Dd side of the lower protrusion 32 is located on the attachment direction Df side of the protrusion locking surface 16 of the rubber cone 1 and faces each other in the up-down direction, and the lower protrusion 32 can be hooked on the protrusion locking surface 16 to prevent it from separating from the rubber cone 1 when the rubber cone 1 falls over.

[0045] The mounting fixture 20 has a protrusion arrangement rotation angle Ar set to 45°, which is less than 75°, so that the mounting fixture 20 can be easily attached to the rubber cone 1 with one twist. Therefore, when the mounting fixture 20 is attached to the rubber cone 1, the upper protrusion 30 is caught on the upper edge surface 10 (FIG. 10(B)) and then twisted once (rotated 45°) in the mounting rotation direction Drf, so that the circumferential positions of the upper protrusion 30 and the groove 14 can be aligned. Therefore, when the mounting fixture 20 is attached to the rubber cone 1, an operator can attach it with one twist, improving the ease of attachment. Furthermore, when the mounting fixture 20 is detached from the rubber cone 1, the lower protrusion 32 and the groove 14 can be aligned with each other by simply rotating the mounting fixture 20 45° in the opposite rotation direction Drf from a state in which the upper protrusion 30 and the groove 14 are aligned with each other in the circumferential direction. In particular, the vehicle restriction section at a construction site such as an expressway may extend over several kilometers in some cases, and a large number of rubber cones 1 will be installed. For this reason, it is useful to ensure the ease of attachment of the attachment device 20 to the rubber cone 1.

[0046] Here, due to the structure of the human body, it is easier to rotate the right arm clockwise than counterclockwise when viewed from the worker with the right arm extended. Therefore, when the fitting tool 20 is attached to the rubber cone 1 and the fitting tool 20 is gripped and rotated with the right hand, the worker can rotate the right arm clockwise rather than counterclockwise. In response to this, the fitting tool 20 is arranged at a position rotated clockwise by the protrusion arrangement rotation angle Ar with respect to the upper protrusion 30 when viewed from the attachment / detachment direction Dd side on the fitting tool central axis Caf. Therefore, the fitting tool 20 can be rotated clockwise from the state of FIG. 10(B), and it is easy to rotate the fitting tool 20, especially when a right-handed worker grips the fitting tool 20 with his / her right hand and attaches the fitting tool 20 to the rubber cone 1.

[0047] In this way, the protrusion arrangement rotation angle Ar of the mounting fixture 20 is set to 40° or more and 75° or less. Therefore, the mounting fixture 20 is prevented from separating from the rubber cone 1 when the rubber cone 1 falls over, and the amount of rotation of the mounting fixture 20 by the worker when attaching the mounting fixture 20 to the rubber cone 1 can be significantly reduced, improving ease of installation.

[0048] Furthermore, the mounting tool 20 is configured to form an overlapping slit 34 along the axial direction at the same circumferential position as the lower protrusion 32 of the shaft portion 22 on the side of the attachment / detachment direction Dd. Therefore, the mounting tool 20 can insert the shaft portion 22 into the internal space 24 of the shaft portion 22 of the other mounting tool 20 by inserting the lower protrusion 32 of the mounting tool 20 into the overlapping slit 34 from the attachment / detachment direction Dd side of the other mounting tool 20 while aligning the position of its own lower protrusion 32 with the position of the overlapping slit 34 on the attachment / detachment direction Dd side of the other mounting tool 20. As a result, since the mounting tool 20 can be stacked in the axial direction, it can be easily carried in a stacked state, and the effort of transportation can be saved. Furthermore, when the mounting tool 20 is stacked in the axial direction, the area occupied in the axial direction can be reduced, making it compact.

[0049] Incidentally, in the past, in mounting fixtures and construction lights that are inserted into the opening at the top of a rubber cone 1, which is a cut cone, there was no need to open the end of the hollow shaft portion facing the attachment / detachment direction, and there was no need to deliberately disrupt the center of gravity balance by positioning the sensor not on the central axis of the mounting fixture but at a position away from the central axis of the mounting fixture to the outer periphery.

[0050] In contrast, in the mounting tool 20 according to the present embodiment, the sensor 60 is not positioned on the mounting tool central axis Caf, but is positioned at a position spaced from the mounting tool central axis Caf toward the outer periphery, although there is a possibility that the center of gravity of the mounting tool 20 to which the sensor 60 is attached may be slightly unbalanced. Therefore, the mounting tool 20 can open the end of the hollow shaft portion 22 on the mounting / removal direction Dd side, and communicate with the internal space 24 and the mounting / removal direction Dd side of the shaft portion 22. Therefore, the mounting tool 20 can insert the overlapping insertion portion 28 of the shaft portion 22 into the internal space 24 in the shaft portion 22 of the other mounting tool 20 so as to insert its own lower protrusion portion 32 into the overlapping slit 34 of the other mounting tool 20.

[0051] In addition, heretofore, one method of integrating a rubber cone and a sensor has been to attach a mounting fixture with a fixed sensor to the neck, which is part of construction equipment such as a construction light attached to the upper end of the rubber cone.

[0052] However, in that case, since the mounting fixture cannot be attached to the rubber cone without the construction lights, even when road construction is carried out during bright hours such as daytime when construction lights are not needed, it is necessary to transport not only the mounting fixture but also the unnecessary construction light to which the mounting fixture is attached, which results in unnecessary baggage and requires the use of a large truck or an increase in the number of trucks. For this reason, there has been a demand for a sensor that can be attached to a rubber cone without using construction lights.

[0053] In contrast, in the mounting fixture 20 according to this embodiment, the mounting fixture 20 to which the sensor 60 is fixed can be attached directly to the rubber cone 1 without the construction light. Therefore, when transporting the mounting fixture to a construction site, workers need only transport the mounting fixture without transporting the construction light. As a result, compared to the conventional mounting fixture 20, the mounting fixture 20 can reduce the amount of luggage required when transporting the mounting fixture 20, and it can be transported by a smaller truck or the number of trucks can be reduced.

[0054] As described above, the rubber cone 1 is installed on the road RD with the upper protrusion 30 of the mounting fixture 20 facing the vehicle VH. Therefore, when the vehicle VH collides with the mounting fixture 20, the side of the mounting fixture 20 where the upper protrusion 30 is provided (i.e., the opposite side of the sensor 60 when viewed from the mounting direction Df) is the part that receives the most impact.

[0055] In contrast, the mounting fixture 20 is arranged so that the upper protrusion 30 is located on the opposite side to the sensor 60 in a plan view. This allows the mounting fixture 20 to have increased strength in the vicinity of the portion of the mounting fixture 20 that is likely to be directly hit by a vehicle, making it less likely to be broken even if the mounting fixture 20 is hit by the vehicle VH.

[0056] In addition, since an overlapping slit 34 is formed on the shaft portion 22 on the side of the attachment / detachment direction Dd along the axial direction of the lower protrusion 32, the strength of the vicinity of the overlapping slit 34 in the mounting fixture 20 is slightly reduced compared to other locations.

[0057] In response to this, the mounting fixture 20 is arranged so that the lower protrusion 32 (i.e., the overlapping slit 34) is positioned at a position shifted in the circumferential direction by the protrusion arrangement rotation angle Ar relative to the vicinity of the upper protrusion 30, which is the portion that will receive the most impact when the vehicle VH collides. Therefore, the mounting fixture 20 can position the vicinity of the overlapping slit 34, which has reduced strength, shifted from the position that will receive the most impact when the vehicle VH collides, and even if the vehicle VH collides, the vicinity of the overlapping slit 34, whose strength has been reduced by the overlapping slit 34, is less likely to be destroyed.

[0058] According to the above configuration, the mounting fixture 20 is attached to a rubber cone 1 as a mounting device, which has an open upper end, and a groove 14 formed over a predetermined circumferential range and a predetermined axial range along the cone central axis Cac, at its upper end, which is recessed from the inner circumference side to the outer circumference side, by moving the upper protrusion 30 and the lower protrusion 32 as protrusions in the mounting direction Df along the cone central axis Cac so that they enter the groove 14.The mounting fixture 20 is provided with a lower protrusion 32 that protrudes toward the outer circumference side, and an upper protrusion 30 that protrudes toward the outer circumference side on the side of the lower protrusion 32 in the removal direction Dd, which is the opposite direction to the mounting direction Df, and the protrusion arrangement rotation angle Ar, which is the angle between the lower protrusion 32 and the upper protrusion 30 in the circumferential direction about the mounting fixture central axis Caf, is set to be 40° or more and 75° or less.

[0059] This allows the mounting fixture 20 to maintain its holding force on the rubber cone 1 while significantly reducing the amount of rotation of the mounting fixture 20 by a worker when attaching it to the rubber cone 1, thereby improving ease of installation.

[0060] The mounting fixture 20 also has a hollow shaft portion 22 that extends along the mounting fixture central axis Caf and has an open end on the attachment / detachment direction Dd side that enters the inside of the rubber cone 1 when the mounting fixture 20 is attached to the rubber cone 1, a lower protrusion 32 that protrudes outward from the outer circumferential surface of the shaft portion 22, and an overlapping slit 34 that is formed from the end of the shaft portion 22 on the attachment / detachment direction Dd side toward the attachment direction Df side, on the attachment / detachment direction Dd side of the lower protrusion 32.

[0061] As a result, the stacking insertion portion 28 of the shaft portion 22 of the mounting fixture 20 is inserted into the internal space 24 in the shaft portion 22 of the other mounting fixture 20 so that its lower protrusion 32 fits into the stacking slit 34 of the other mounting fixture 20, allowing multiple mounting fixtures 20 to be stacked along the axial direction, reducing the area they occupy in the axial direction.

[0062] [6. Other embodiments] In the above-described embodiment, the protrusion arrangement rotation angle Ar is set to 40° or more and 75° or less. The present invention is not limited to this, and the protrusion arrangement rotation angle Ar may be set to 40° or more and 60° or less. Here, the ease of rotating the mounting tool 20 clockwise differs between right-handed and left-handed workers. In contrast, the inventors' experiments have shown that when the protrusion arrangement rotation angle Ar is set to 60° or less, a left-handed worker can easily attach the mounting tool 20 to the rubber cone 1 with one twist, even when using his left hand. For this reason, by setting the protrusion arrangement rotation angle Ar to 40° or more and 60° or less, the mounting tool 20 can be attached to the rubber cone 1 with one twist, regardless of whether the worker is right-handed or left-handed (i.e., right-handed or left-handed), while ensuring the holding force of the mounting tool 20 to the rubber cone 1.

[0063] In the above-described embodiment, the mounting fixture 20 is provided with the upper protrusion 30, the lower protrusion 32, and the overlapping slit 34. The present invention is not limited to this, and the upper protrusion 30 may be omitted, and the mounting fixture 20 may be provided with the lower protrusion 32 and the overlapping slit 34.

[0064] Furthermore, in the above-described embodiment, the case has been described where the lower protrusion 32 is disposed at a position rotated clockwise by the protrusion arrangement rotation angle Ar relative to the upper protrusion 30 as viewed from the attachment / detachment direction Dd. The present invention is not limited to this, and the lower protrusion 32 may be disposed at a position rotated counterclockwise by the protrusion arrangement rotation angle Ar relative to the upper protrusion 30 as viewed from the attachment / detachment direction Dd. In that case, it is possible for an operator to rotate the mounting fixture 20 more easily and naturally with his / her left hand instead of his / her right hand.

[0065] Furthermore, in the above-described embodiment, the mounting fixture 20 is formed with two protrusions, the upper protrusion 30 and the lower protrusion 32. However, the present invention is not limited to this, and the mounting fixture 20 may be formed with any number of protrusions, three or more.

[0066] Furthermore, in the above-described embodiment, a case has been described in which the overlapping slits 34 are formed along the axial direction at the same circumferential position as the lower protrusion 32 on the side of the lower protrusion 32 in the attachment / detachment direction Dd in the shaft portion 22. The present invention is not limited to this, and the overlapping slits 34 may be formed along the axial direction at a different circumferential position from the lower protrusion 32 on the side of the lower protrusion 32 in the attachment / detachment direction Dd in the shaft portion 22. However, if the circumferential positions of the lower protrusion 32 and the overlapping slits 34 are the same, all of the mounting devices 20 can be lined up in the same orientation when stacked.

[0067] Furthermore, in the above-described embodiment, the case has been described in which the lower protrusion marker upper part 48u protrudes in the removal direction Dd from the upper end of the main body outer wall part 44 by the same height as the upper protrusion marker upper part 46u. The present invention is not limited to this, and the lower protrusion marker upper part 48u may be made to protrude in the removal direction Dd from the upper end of the main body outer wall part 44 to a height lower than the upper protrusion marker upper part 46u, thereby allowing the operator to recognize the axial positional relationship between the upper protrusion 30 and the lower protrusion 32.

[0068] Furthermore, in the above-described embodiment, a case has been described in which both the upper protrusion mark upper portion 46u and the upper protrusion mark side portion 46s are provided as the upper protrusion mark 46, and both the lower protrusion mark upper portion 48u and the lower protrusion mark side portion 48s are provided as the lower protrusion mark 48. The present invention is not limited to this, and only one of the upper protrusion mark upper portion 46u or the upper protrusion mark side portion 46s may be provided as the upper protrusion mark 46, and only one of the lower protrusion mark upper portion 48u or the lower protrusion mark side portion 48s may be provided as the lower protrusion mark 48.

[0069] Furthermore, in the above-described embodiment, the case has been described in which the upper protrusion mark 46 and the lower protrusion mark 48 allow the worker to visually recognize the circumferential rotational position and the axial position of the upper protrusion 30 and the lower protrusion 32 in the attached state. The present invention is not limited to this, and the upper protrusion mark 46 and the lower protrusion mark 48 may allow the worker to tactilely recognize the circumferential rotational position and the axial position of the upper protrusion 30 and the lower protrusion 32 in the attached state. In this case, the rotational position and the axial position of the upper protrusion 30 and the lower protrusion 32 may be recognized by the worker only visually or only tactilely, or may be recognized by both visually and tactilely.

[0070] Furthermore, in the above-described embodiment, the sensor 60 is configured to be detachable from the sensor holding portion 50 of the mounting tool 20. However, the present invention is not limited to this, and the sensor 60 may be configured to be non-detachable from the sensor holding portion 50 of the mounting tool 20 (i.e., non-removable).

[0071] Furthermore, in the above-described embodiment, a case has been described in which a sensor 60 that detects vibration or tilt and notifies a predetermined warning notification terminal via a wireless communication unit is attached to the sensor holding unit 50 as a communication device attachment unit in the attachment 20. The present invention is not limited to this, and various devices that construct a portable network at any time may be attached to the attachment 20. Also, various electronic devices that do not have wireless communication capabilities may be attached to the electronic device attachment unit of the attachment 20.

[0072] Furthermore, in the above-mentioned embodiment, the rubber cone 1 is made of rubber. However, the present invention is not limited to this, and the rubber cone 1 may have various other configurations, such as making the rubber cone 1 out of various other materials such as resin, or fixing a rubber member with a groove 14 to the upper end of the main body 4 made of cloth or the like.

[0073] Furthermore, in the above-mentioned embodiment, the present invention has been described as being applied to the mounting fixture 20 attached to the rubber cone 1. However, the present invention is not limited to this, and may be applied to, for example, various construction equipment such as construction lights attached to the rubber cone 1, devices into which signs are inserted, and other various components that are attached to devices having an opening at the top end.

[0074] Furthermore, the present invention is not limited to the above-mentioned embodiments and other embodiments. In other words, the scope of application of the present invention also extends to embodiments in which the above-mentioned embodiments and part or all of the above-mentioned other embodiments are arbitrarily combined. The scope of application of the present invention also extends to cases in which a part of the configuration described in any of the above-mentioned embodiments and other embodiments is extracted and replaced or diverted with a part of the configuration of any of the above-mentioned embodiments and other embodiments, or a part of the extracted configuration is added to any of the embodiments.

[0075] Furthermore, in the above-described embodiment, a description has been given of a case in which the mounting fixture 20 is configured by the lower protrusion 32 as the first protrusion and the upper protrusion 30 as the second protrusion. However, the present invention is not limited to this, and the mounting fixture may be configured by a first protrusion and a second protrusion having various other configurations. [Industrial Applicability]

[0076] The present invention may also be utilized with mountings that are attached to safety devices. [Explanation of symbols]

[0077] 1...rubber cone, 2...bottom, 4...main body, 6...internal space, 8...opening, 10...upper edge surface, 12...fitting surface, 14...groove, 16...protruding portion locking surface, 20...mounting fixture, 22...shaft, 24...internal space, 26...fitting portion, 28...insertion portion when stacking, 29...drainage hole, 30...upper protruding portion, 32...lower protruding portion, 34...slit for stacking, 40...main body, 42...main body bottom, 42a...main body bottom opening, 42S...main body mounting surface, 44...main body outer wall, 44S...main body outer surface, 46...upper protruding portion mark, 46u...upper protruding portion mark upper portion, 46s...side portion of upper protrusion mark, 48...lower protrusion mark, 48u...upper portion of lower protrusion mark, 48s...side portion of lower protrusion mark, 50...sensor holding portion, 50a...sensor side abutment portion, 50b...sensor protective canopy, 50c...bottom portion of sensor holding portion, 60...sensor, RD...road, VH...vehicle, Ca...central axis, Caf...central axis of mounting fixture, Cac...central axis of cone, L1...groove length, L2...spacing of upper protrusions on bottom surface, L3...spacing of protrusions, Ar...rotation angle of protrusion arrangement, Df...mounting direction, Dd...removal direction, Drf...rotation direction when mounted, Dv...vehicle travel direction.

Claims

1. A mounting tool is attached to a device to which the mounting tool is attached by moving a protrusion in an attachment direction along a central axis so as to enter the groove, the protrusion being attached to the device by an upper end that is open and has a groove formed in a predetermined circumferential range and a predetermined axial range along a central axis and recessed from an inner periphery side toward an outer periphery side, the mounting tool comprising: a first protruding portion protruding toward an outer periphery; a second protruding portion protruding toward an outer circumferential side on a side of the first protruding portion in a mounting direction opposite to the mounting direction; a hollow shaft portion that extends along the central axis, has an end portion on the attachment / detachment direction side that is open, and enters the inside of the attachment target device when the attachment tool is attached to the attachment target device, and has the first protrusion and the second protrusion protruding from an outer circumferential surface; a slit formed from the end of the shaft portion on the side of the first protrusion in the attachment direction toward the attachment direction; having The angle between the first protruding portion and the second protruding portion in the circumferential direction about the central axis is equal to or greater than 40 degrees and equal to or less than 75 degrees. Mounting fixture.

2. The angle between the first protruding portion and the second protruding portion in the circumferential direction about the central axis is 40 degrees or more and 60 degrees or less.

2. The fixture of claim 1.

3. The second protrusion is located at a position rotated by 40 degrees to 75 degrees clockwise about the central axis with respect to the first protrusion when viewed from the attachment / detachment direction side.

2. The fixture of claim 1.

4. The slit is disposed at the same circumferential position as the first protrusion.

2. The fixture of claim 1.

5. The slit is When the plurality of mounting tools are stacked along the axial direction, the first protrusions of the other mounting tools are inserted into each other.

5. A mounting device according to any one of claims 1 to 4.

6. A main body portion formed on the side of the shaft portion in the attachment / detachment direction and exposed to the outside of the attached device in the attached state.

2. The fixture of claim 1, further comprising:

7. a first mark portion formed on the main body portion at a position corresponding to the first protrusion portion; a second mark portion formed in the main body portion at a position corresponding to the second protrusion portion; 7. The fixture of claim 6, further comprising:

8. The first mark portion is disposed at the same circumferential position as the first protrusion portion, The second mark portion is disposed at the same circumferential position as the second protrusion portion.

8. The fixture of claim 7.

9. The first mark portion and the second mark portion have shapes corresponding to a positional relationship between the first protrusion portion and the second protrusion portion in the axial direction.

8. The fixture of claim 7.

10. The first mark portion and the second mark portion allow the positions of the first protrusion portion and the second protrusion portion to be visually recognized.

8. The fixture of claim 7.

11. The first mark portion and the second mark portion allow the positions of the first protrusion portion and the second protrusion portion to be tactilely recognized.

8. The fixture of claim 7.

12. The first mark portion and the second mark portion allow the positions of the first protrusion portion and the second protrusion portion to be visually and tactilely recognized.

8. The fixture of claim 7.

13. Electronic equipment or electronic equipment mounting part and The second protrusion is located on the opposite side of the electronic device or the electronic device mounting portion with respect to the central axis.

7. The fixture of claim 6.

14. A drain hole formed at the end of the shaft portion in the mounting direction 2. The fixture of claim 1 further comprising:

15. Electronic equipment or electronic equipment mounting part 15. The fixture of any preceding claim, further comprising:

16. the electronic device is a communication device, The electronic device mounting portion is a communication device mounting portion.

16. The fixture of claim 15.

17. A mounting tool is attached to a device to which the mounting tool is attached by moving a protrusion in an attachment direction along a central axis so as to enter the groove, the protrusion being attached to the device by an upper end that is open and has a groove formed in a predetermined circumferential range and a predetermined axial range along a central axis and recessed from an inner periphery side toward an outer periphery side, the mounting tool comprising: a hollow shaft portion that extends along the central axis, has an end portion on a side in a direction opposite to the mounting direction, and is open, and enters the inside of the device to be attached when the attachment tool is attached to the device to be attached; a first protrusion protruding from an outer circumferential surface of the shaft portion toward an outer circumferential side; a slit formed from the end of the shaft portion on the side of the first protrusion in the attachment direction toward the attachment direction; A mounting fixture comprising:

18. The slit is disposed at the same circumferential position as the first protrusion.

20. The fixture of claim 17.

19. The slit is When the plurality of mounting tools are stacked along the axial direction, the first protrusions of the other mounting tools are inserted into each other.

19. A fitting according to claim 17 or 18.

20. a second protruding portion protruding from an outer circumferential surface of the shaft portion toward the outer circumferential side on a side of the first protruding portion in the attachment / detachment direction; 20. The fixture of any one of claims 17 to 19, further comprising:

21. A drain hole formed at the end of the shaft portion in the mounting direction 20. The fixture of claim 17 further comprising:

22. Electronic equipment or electronic equipment mounting part 21. The fixture of any one of claims 17 to 20, further comprising:

23. The electronic device or the electronic device mounting portion is disposed at a position offset from the central axis of the shaft portion.

23. The fixture of claim 22.

24. The attached device is a cone that is placed on the ground.

24. A fitting according to any preceding claim.

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