JP7635636B2 - Mounting fixture - Google Patents

Description

The present invention relates to a mounting fixture, and is suitable for use with mounting fixtures that are attached to, for example, cone-shaped safety devices.

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 to inform drivers of the traffic restrictions. Such 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).

JP 2018-170702 A

It is desirable to improve the ease of use of such fixtures.

The present invention was made with the above points in mind, and aims to propose a mounting fixture that can improve usability.

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

This allows the present invention to improve attachment to the device to which it is attached while ensuring a holding force for the device to which it is attached.

The mounting tool of the present invention is attached to a device to which the upper end is open and has a groove formed over a predetermined circumferential range and a predetermined axial range along the central axis, recessed from the inner circumference side toward 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 in the detachment direction opposite 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 the mounting tool is attached to the device to which the mounting tool is attached, a first protrusion that protrudes outward from the outer circumferential surface of the shaft portion, and a slit that is formed from the end of the shaft portion on the detachment direction side toward the mounting direction side on the detachment direction side of the first protrusion.

As a result, the present invention allows the shaft portion to be inserted into the internal space of 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, allowing multiple mounting fixtures to be stacked along the axial direction, reducing the area they occupy in the axial direction.

The present invention makes it possible to realize a mounting fixture that can improve usability.

FIG. 2 is a front view showing the configuration of the rubber cone, the mounting fixture, and the sensor. FIG. 1 is a plan view showing the rubber cone configuration (1). FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2, showing the rubber cone configuration (2). FIG. 1 is a perspective view showing the configuration (1) of the mounting fixture. FIG. 13 is a perspective view showing the configuration (2) of the mounting fixture. FIG. 13 is a front view showing the mounting fixture configuration (3). FIG. 11 is a plan view showing the configuration (4) of the mounting fixture. 11 is a plan view showing the positional relationship between an upper protrusion and a lower protrusion. FIG. FIG. 2 is a perspective view showing the configuration of the mounting fixture in a stacked state. FIG. 13 is a perspective view showing how the mounting fixture is attached to the rubber cone. FIG. 2 is a plan view showing rubber cones being placed on a road.

Below, the form for implementing the invention (hereinafter referred to as embodiment) will be explained with reference to the drawings.

[1. Rubber cone configuration]
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, which has 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.

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 referred to 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 referred to 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 referred to as the left and right sides, respectively, and the upper and lower sides are further defined and explained. 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 referred to as the axial direction. In addition, the central axis of the mounting fixture 20 along the vertical direction of the mounting fixture 20 when attached to the rubber cone 1 in an upright state is referred to 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 the circumferential direction. In addition, with respect to the axial direction, the direction in which the mounting fixture 20 approaches the rubber cone 1 from the upper side to the lower side 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 above the central axis Ca is called the inner circumferential direction, and the direction moving away from the central axis Ca while being perpendicular to the circumferential direction when viewed from above the central axis Ca is called 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, with respect to the radial direction, the side approaching the central axis Ca is also called the inner or inner circumferential side, and the side moving away from the central axis Ca is also called the outer or outer circumferential side.

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 the road, its underside comes into contact with the road.

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 open upper and lower ends. The main body 4 has an upper end (i.e., the top) cut off in the horizontal direction, and an opening 8 that is circular in 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 that is annular (ring-shaped) in plan view along the horizontal direction, is formed with a width equal to the thickness of the main body 4. The main body 4 also 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 (Figure 3) toward the mounting direction Df.

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 formed continuously from the upper end (i.e., upper edge surface 10) of the main body 4 along the axial direction by the groove length L1 toward the mounting direction Df. In addition, the main body 4 is 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.

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

[2. Configuration of the 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).

[2-1. Configuration of shaft part]
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 insertion portion 28 on the lower side. The central axis of the shaft portion 22 is the attachment central axis Caf.

[2-1-1. Configuration of fitting portion]
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 peripheral side of the fitting surface 12 in the attached state.

[2-1-2. Configuration of insertion section 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/detaching 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).

[2-1-3. Configuration of protrusion]
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 of 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 surface of the upper protrusion 30 on the mounting direction Dd side is the bottom surface upper protrusion distance L2 (FIG. 6). This bottom surface upper protrusion distance L2 is set slightly longer than the groove length L1.

In addition, a lower protrusion 32, which is generally rectangular and open on the outer periphery, protrudes outward from the end of the insertion portion 28 in the mounting direction Df, i.e., the outer periphery of the end of the shaft portion 22 in the mounting direction Df. The protrusion interval L3, which is the axial distance between the end face of the upper protrusion 30 in the mounting direction Df and the end face of the lower protrusion 32 in the removal direction Dd, is set to be slightly longer than the groove length L1.

In this way, the shaft portion 22 is formed with an upper protrusion 30 on the detachment direction Dd side and a 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 attachment central axis Caf as the axis when viewed from above the attachment central axis Caf is the protrusion arrangement rotation angle Ar. When viewed from the attachment/detachment direction Dd side on the attachment central axis Caf, the lower protrusion 32 is arranged 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 attachment 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, so that the worker can attach the attachment tool 20 to the rubber cone 1 with a single twist (i.e., 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°.

[2-1-4. Slit configuration]
Furthermore, the mounting tool 20 has a stacking slit 34 formed along the axial direction on the fitting portion 26 of the shaft portion 22 on the side of the lower protrusion 32 in the attachment/detachment direction Dd. 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 by about 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.

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 multiple mounting fixtures 20 to be stacked along the axial direction. Hereinafter, this state will be referred to as the overlapping state. In this overlapping 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.

[2-1-5. Configuration of drainage holes]
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.

[2-2. Configuration of main body]
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.

[2-2-1. Configuration of the bottom of the main body]
The body bottom 42 is shaped like a capital letter "U" when viewed in 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.

A body mounting surface 42S, which is a flat surface along the radial direction, is formed on the side of the bottom 42 of the body in the mounting direction Df. 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 mounted, the bottom 42 of the body hooks 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.

[2-2-2. Configuration of the outer wall of the main body]
[2-2-2-1. Overall configuration 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 left and right ends 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.

[2-2-2-2. Configuration of Marking Part]
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 portion 46u and an upper protrusion mark side portion 46s. The upper protrusion mark upper portion 46u protrudes from the upper end 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 of the main body outer surface 44S to the lower end.

The lower protrusion mark 48 as the first mark 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 of the main body 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 near the lower end of the main body outer surface 44S by the same height as the upper protrusion mark upper side portion 46u.

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, when the mounting tool 20 is attached, the upper protrusion 30 and the lower protrusion 32 are stored in the internal space 6 of the rubber cone 1, so that the upper protrusion 30 and the lower protrusion 32 are not exposed to the outside of the main body 4, and even if the worker cannot visually see 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, when the mounting tool 20 is attached, the worker can visually recognize the rotational positions of the upper protrusion 30 and the lower protrusion 32 in the circumferential direction, and this can be used as a guide for attaching and detaching the mounting tool 20 to the rubber cone 1.

In addition, the upper protrusion marker side portion 46s extends from near the upper end to the lower end of the outer surface 44S of the main body, whereas the lower protrusion marker side portion 48s is formed only near the lower end of the outer surface 44S of the main body. Therefore, the mounting device 20 can match the axial positional relationship between the actual upper protrusion 30 and lower protrusion 32 with the axial positional relationship between the upper protrusion marker side portion 46s and the lower protrusion marker side portion 48s. This allows the mounting device 20 to allow the worker to visually recognize the axial positions of the upper protrusion 30 and lower protrusion 32 when attached.

[2-2-3. Configuration of sensor holding section]
The sensor holding portion 50 is located at a position rotated 180° with respect to the upper protrusion 30 about the mounting fixture central axis Caf, that is, on the opposite side of the upper protrusion 30 with respect to 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 on the outer circumferential side.

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

[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 the warning notification terminal receives a predetermined notification from the sensor 60, it issues an alarm.

[3. Attachment process to 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 (on the side of 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 to be 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 direction Dd is positioned on the attachment direction Df side of the protrusion engagement surface 16 of the rubber cone 1.

Next, when the upper protrusion 30 of the mounting fixture 20 catches on 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, as shown in FIG. 10(B), the mounting fixture 20 is rotated by 45°, which is the protrusion arrangement rotation angle Ar, in the mounting rotation direction Drf, which is clockwise in a plan view. 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 the state shown in FIG. 10(C), the end face of the lower protrusion 32 of the mounting fixture 20 on the side facing the mounting/removal direction Dd faces the protrusion engagement surface 16 of the rubber cone 1 in the vertical direction.

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, so that the body mounting surface 42S (FIGS. 5 and 6) of the mounting tool 20 abuts against 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 on the detachment direction Dd side of the upper protrusion 30 of the mounting tool 20 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 is 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.

[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.

[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. 10C 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 attachment/detachment direction Dd side is located on the attachment direction Df side of the protrusion locking surface 16 of the rubber cone 1 (FIG. 10B). By setting the protrusion arrangement rotation angle Ar to 40° or more in this manner, 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 of the lower protrusion 32 on the attachment/detachment direction Dd side 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 onto the protrusion locking surface 16 to prevent it from separating from the rubber cone 1 when the rubber cone 1 falls over.

The protrusion arrangement rotation angle Ar of the mounting tool 20 is set to 45°, which is less than 75°, so that the mounting tool 20 can be easily attached to the rubber cone 1 with one twist. Therefore, when the mounting tool 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, and the circumferential position of the upper protrusion 30 and the groove portion 14 can be aligned. Therefore, when the mounting tool 20 is attached to the rubber cone 1, the worker can attach it with one twist, improving the ease of attachment. Furthermore, when the mounting tool 20 is detached from the rubber cone 1, the mounting tool 20 can be detached from the rubber cone 1 by simply rotating 45° in the opposite direction to the mounting rotation direction Drf from a state in which the circumferential positions of the upper protrusion 30 and the groove portion 14 are aligned. In particular, vehicle restriction sections at construction sites such as expressways can sometimes extend over several kilometers, and many rubber cones 1 are installed. For this reason, it is useful to ensure that the mounting fixture 20 can be attached to the rubber cone 1.

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 attaching the attachment tool 20 to the rubber cone 1, if the attachment tool 20 is grasped and rotated with the right hand, the worker can rotate the right arm clockwise rather than counterclockwise. In response to this, the attachment tool 20 is arranged in 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 on the attachment tool central axis Caf. Therefore, the attachment tool 20 can be rotated clockwise from the state shown in FIG. 10(B), and it is easy to rotate the attachment tool 20, especially when a right-handed worker grasps the attachment tool 20 with his right hand and attaches the attachment tool 20 to the rubber cone 1.

In this way, the protrusion arrangement rotation angle Ar of the mounting fixture 20 is set to 40° or more and 75° or less. This allows the mounting fixture 20 to be prevented from separating from the rubber cone 1 when the rubber cone 1 falls over, while significantly reducing the amount of rotation of the mounting fixture 20 by the worker when attaching it to the rubber cone 1, thereby improving ease of installation.

Furthermore, the mounting fixture 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 fixture 20 can insert the shaft portion 22 into the internal space 24 of the shaft portion 22 of the other mounting fixture 20 by inserting the lower protrusion 32 into the overlapping slit 34 from the attachment/detachment direction Dd side of the other mounting fixture 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 fixture 20. As a result, since multiple mounting fixtures 20 can be stacked along the axial direction, the mounting fixture 20 can be easily carried in a stacked state, and the effort of transportation can be saved. Furthermore, when multiple mounting fixtures 20 are stacked along the axial direction, the area occupied in the axial direction of the mounting fixture 20 can be reduced, making it compact.

In the past, in mounting fixtures and construction lights that are inserted into the opening at the top of a rubber cone (cut cone), there was no need to open the end of the hollow shaft in the direction of attachment and detachment, and there was no need to deliberately disrupt the balance of the center of gravity and place the sensor away from the central axis of the mounting fixture, rather than on the central axis, to the outer periphery.

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

Here, a conventional method for integrating a rubber cone and a sensor involves attaching a fixture with a fixed sensor to the neck, which is part of the construction equipment, such as a construction light, attached to the top end of the rubber cone.

However, in this case, the mounting fixture cannot be attached to the rubber cone without construction lights, so 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, resulting in unnecessary cargo and requiring the use of large trucks or an increase in the number of trucks. For this reason, there was a demand for a way to attach a sensor to a rubber cone without using construction lights.

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 going through a 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 amount of luggage required to transport the mounting fixture 20 can be reduced, and a smaller truck can be used for transportation, or the number of trucks can be reduced.

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

In response to this, 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 points on the mounting fixture 20 that are likely to be directly hit by the vehicle, making it less likely to be destroyed even if the vehicle VH collides.

In addition, an overlapping slit 34 is formed on the shaft portion 22 on the side of the lower protrusion 32 in the axial direction of the attachment/detachment direction Dd, so the strength of the area near the overlapping slit 34 on the attachment device 20 is slightly reduced compared to other areas.

In response to this, the mounting device 20 is arranged so that the lower protrusion 32 (i.e., the overlapping slit 34) is positioned at a position shifted circumferentially by the protrusion arrangement rotation angle Ar from the vicinity of the upper protrusion 30, which is the portion that receives the most impact when the vehicle VH collides. As a result, the mounting device 20 can position the vicinity of the overlapping slit 34, which has reduced strength, at a position shifted from the position that receives the most impact when the vehicle VH collides, making it possible to make the vicinity of the overlapping slit 34, whose strength has been reduced by the overlapping slit 34, less likely to be destroyed even when the vehicle VH collides.

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 and recessed from the inner circumference side to the outer circumference side at the upper end, 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 to the outer circumference side, and an upper protrusion 30 that protrudes to the outer circumference side on the side of the lower protrusion 32 in the detachment direction Dd opposite 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.

This allows the mounting fixture 20 to maintain its holding force on the rubber cone 1 while significantly reducing the amount of rotation the worker needs to make of the mounting fixture 20 when attaching it to the rubber cone 1, improving ease of installation.

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 detachment direction Dd side that enters 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 detachment direction Dd side toward the attachment direction Df side on the detachment direction Dd side of the lower protrusion 32.

As a result, the mounting fixture 20 can have the overlapping insertion portion 28 of the shaft portion 22 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 overlapping slit 34 of the other mounting fixture 20, allowing multiple mounting fixtures 20 to be overlapped along the axial direction, reducing the area they occupy in the axial direction.

6. Other embodiments
In the above 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.

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.

Furthermore, in the above-described embodiment, the case has been described where the lower protrusion 32 is arranged 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 arranged 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 this case, it is easier for an operator to rotate the attachment tool 20 without difficulty when rotating the attachment tool 20 with his/her left hand instead of his/her right hand.

Furthermore, in the above-described embodiment, the mounting fixture 20 is described as having two protrusions, an upper protrusion 30 and a lower protrusion 32. The present invention is not limited to this, and any number of protrusions, three or more, may be formed on the mounting fixture 20.

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

Furthermore, in the above-described embodiment, the case where the lower protrusion mark upper part 48u protrudes from the upper end of the main body outer wall part 44 in the attachment/detachment direction Dd to the same height as the upper protrusion mark upper part 46u has been described. The present invention is not limited to this, and the lower protrusion mark upper part 48u may be protruded from the upper end of the main body outer wall part 44 in the attachment/detachment direction Dd to a height lower than the upper protrusion mark upper part 46u, allowing the worker to recognize the axial positional relationship between the upper protrusion 30 and the lower protrusion 32.

Furthermore, in the above-mentioned 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.

Furthermore, in the above-described embodiment, the upper protrusion mark 46 and the lower protrusion mark 48 are used to allow the worker to visually recognize the circumferential rotational position and 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 be used to allow the worker to tactilely recognize the circumferential rotational position and axial position of the upper protrusion 30 and the lower protrusion 32 in the attached state. In this case, the worker may be allowed to recognize the rotational position and axial position of the upper protrusion 30 and the lower protrusion 32 only visually or only tactilely, or may be allowed to recognize both visually and tactilely.

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

Furthermore, in the above-described embodiment, a case has been described in which a sensor 60 that detects vibrations and tilts 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.

Furthermore, in the above-mentioned embodiment, the rubber cone 1 is formed from rubber. The present invention is not limited to this, and the rubber cone 1 may have various other configurations, such as forming the rubber cone 1 from 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.

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. The present invention is not limited to this, and may be applied to various other components that are inserted and attached to a device having an opening at the upper end, such as various construction equipment such as construction lights attached to the rubber cone 1 or a device into which a sign is inserted.

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 extends to embodiments in which the above-mentioned embodiments are combined in part or in whole with the above-mentioned other embodiments in any combination. 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.

Furthermore, in the above-mentioned embodiment, the mounting fixture 20 is configured by the lower protrusion 32 as the first protrusion and the upper protrusion 30 as the second protrusion. The present invention is not limited to this, and the mounting fixture may be configured by the first protrusion and the second protrusion having various other configurations.

The present invention can also be used with mounting fixtures that can be attached to safety devices.

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...sensor holding bottom 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 (24)

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 in a mounting/removal direction opposite to the mounting direction from the first protruding portion ;
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 device to be attached when the attachment tool is attached to the device to be attached, 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
An angle between the first protrusion and the second protrusion in a circumferential direction about the central axis is equal to or greater than 40 degrees and equal to or less than 75 degrees. The mounting fixture according to claim 1 , wherein an angle between the first protrusion and the second protrusion in a circumferential direction about the central axis is greater than or equal to 40 degrees and less than or equal to 60 degrees. The mounting device according to claim 1, characterized in that the second protrusion is located at a position rotated clockwise by 40 degrees or more and 75 degrees or less with respect to the first protrusion about the central axis when viewed from the attachment/detachment direction side. The mounting tool according to claim 1 , wherein the slit is disposed at the same circumferential position as the first protrusion. The slit is
The fixture according to any one of claims 1 to 4 , characterized in that, when a plurality of the fixtures are stacked along the axial direction, the first protrusions of the other fixtures are caused to fit inside each other. a main body portion formed on the shaft portion in the attachment /detachment direction and exposed to the outside of the device to which the shaft portion is attached in the attached state;
2. The fixture of claim 1, further comprising : a first mark portion formed on the main body portion at a position corresponding to the first protrusion portion;
The mounting tool according to claim 6 , further comprising: a second mark portion formed on the main body portion at a position corresponding to the second protrusion portion. The first mark portion is disposed at the same circumferential position as the first protrusion portion,
The mounting tool according to claim 7 , wherein the second mark portion is disposed at the same circumferential position as the second protrusion portion. The mounting fixture according to claim 7 , wherein 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. The mounting tool according to claim 7 , wherein 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. The mounting tool according to claim 7 , wherein 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. The mounting tool according to claim 7 , wherein 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. Further comprising an electronic device or an electronic device mounting portion,
The mounting fixture according to claim 6 , wherein the second protrusion is located on an opposite side of the electronic device or the electronic device mounting portion with respect to the central axis. The fixture according to claim 1 , further comprising a drainage hole formed in an end of the shaft portion on the mounting direction side. The mounting fixture according to any one of claims 1 to 4 , further comprising an electronic device or an electronic device mounting portion. the electronic device is a communication device,
The mounting fixture according to claim 15 , wherein the electronic device mounting portion is a communication device mounting portion. 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 in the attachment/detachment direction toward the mounting direction side on the side of the first protrusion in the attachment/detachment direction. The mounting device according to claim 17 , characterized in that the slit is disposed at the same circumferential position as the first protrusion. The slit is
The mounting fixture according to claim 17 or claim 18 , characterized in that when a plurality of the mounting fixtures are stacked along the axial direction, the first protrusions of the other mounting fixtures are inserted into each other. The mounting tool according to any one of claims 17 to 19 , further comprising: a second protrusion protruding outward from the outer circumferential surface of the shaft portion on the side in the attachment/detachment direction of the first protrusion. The fixture according to claim 17 , further comprising a drainage hole formed in the end of the shaft portion facing the mounting direction. The mounting device according to any one of claims 17 to 20 , further comprising an electronic device or an electronic device mounting portion. The mounting fixture according to claim 22 , characterized in that the electronic device or the electronic device mounting portion is arranged at a position offset from the central axis of the shaft portion. The mounting tool according to any one of claims 1 to 3 , wherein the device to be mounted is a cone that is placed on the ground.

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