Pressing member and vibration information acquisition device

Abstract

To more stably detect water leakage occurring on the depth side with respect to a pressing object surface.SOLUTION: A pressing member 100 comprises a plurality of protrusion parts 120 as shown in (B), (C). Each of the protrusion parts 120 is connected to an outer peripheral edge 111 (refer to (C)) of a counter part 110. Each of the protrusion parts 120 protrudes toward the ground surface from the counter part 110 as shown in (B). A tip end edge 121 (refer to (D)) in the protrusion direction of the protrusion part 120 is a portion contacting the ground surface, and the tip end edge 121 has a shape that has the curvature and becomes convex toward the ground surface side.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a pressing member and a vibration information acquiring device. [Background technology]

[0002] Patent Document 1 discloses a process in which, when searching for a water leak, the tip of the rod-shaped part is brought into contact with a buried pipeline or valve equipment such as a water supply valve, stop valve, gate valve, or fire hydrant in the pipeline. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2019-144067 Summary of the Invention [Problem to be solved by the invention]

[0004] To detect a water leak occurring in a pipe located behind a surface to be pressed, such as the ground, for example, a pressing member is pressed against the surface to be pressed. As a result, vibrations caused by the water leak and transmitted to the surface to be pressed are transmitted to the pressing member, and the water leak can be detected via the pressing member. Here, if the contact between the pressing member and the pressed surface is unstable, the vibration received by the pressing member is likely to fluctuate, making the detection of water leakage unstable. An object of the present invention is to more stably detect water leakage occurring on the inner side of the pressed surface. [Means for solving the problem]

[0005] The pressing member to which the present invention is applied is a pressing member that is pressed against a surface to be pressed and receives vibrations from the surface to be pressed that are caused by a water leak occurring in a pipe located further back than the surface to be pressed, and the portion of the pressing member that comes into contact with the surface to be pressed has a curvature and a shape that is convex toward the surface to be pressed. Here, the device may comprise an opposing portion arranged opposite the pressed surface, and a protruding portion connected to the opposing portion and protruding from the opposing portion toward the pressed surface, wherein the tip edge of the protruding portion in the protruding direction is the portion that contacts the pressed surface, and the tip edge has a curvature and a shape that is convex toward the pressed surface. The protruding portion may have a length in the width direction greater than a length in the protruding direction. In addition, the protrusion may have one end and another end that are located at different positions in the width direction, and the tip edge may be given a curvature over the entire area from the one end to the other end of the protrusion. In addition, the protrusions may be provided in multiple numbers, the opposing portion may be formed in a plate shape and arranged to face the pressed surface, and the protrusions may be arranged at regular intervals in the circumferential direction of the opposing portion. The pressing member may be formed by bending a metal plate, and the opposing portion and the protruding portion may be integral with each other. Furthermore, when the present invention is considered as a vibration information acquisition device, the vibration information acquisition device to which the present invention is applied is a vibration information acquisition device that includes a pressing member that is pressed against a surface to be pressed and receives vibrations from the surface to be pressed that are caused by a water leak in a pipe located further back than the surface to be pressed, and a conversion unit that converts the vibrations received by the pressing member into an electrical signal, and the portion of the pressing member that comes into contact with the surface to be pressed has a curvature and a shape that is convex toward the surface to be pressed. [Effects of the Invention]

[0006] According to the present invention, it is possible to more stably detect water leakage occurring on the back side of the pressed surface. [Brief explanation of the drawings]

[0007] [Figure 1] 1A and 1B are diagrams illustrating a vibration information acquiring device. [Figure 2] 10(A) to 10(D) are diagrams illustrating a pressing member. [Figure 3] 10A to 10C are diagrams illustrating a part of a manufacturing process of the pressing member. [Figure 4] FIG. 10 is a diagram showing a comparative example of a pressing member. [Figure 5] 10A and 10B are diagrams showing a comparative example of a pressing member. [Figure 6] 10A and 10B are diagrams illustrating a state in which a protrusion contacts the ground. [Figure 7] 10(A) and 10(B) are diagrams illustrating modified examples of the protrusion. [Figure 8] 10(A) and 10(B) are diagrams showing other modified examples of the protrusion. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described. 1A and 1B are diagrams illustrating a vibration information acquiring device 1 according to this embodiment. FIG. 1A is a diagram showing the overall configuration of a vibration information acquisition device 1. As shown in FIG. As shown in FIG. 1(A), the vibration information acquiring device 1 of this embodiment is provided with a rod-shaped part 10 that is placed in contact with a detection target such as a pipe and receives vibrations from the detection target. One end 10A of the rod-shaped portion 10, which is located at the bottom in the figure, is placed in contact with a pipe or the like. The rod-shaped portion 10 receives vibrations from the pipe caused by a water leak occurring in the pipe.

[0009] Furthermore, in this embodiment, the other end 10B of the rod-shaped part 10 is connected to the conversion part 20. In this embodiment, vibrations received by the rod-shaped portion 10 from the object to be detected are transmitted to the conversion portion 20 via the rod-shaped portion 10. The conversion portion 20 converts the vibrations transmitted from the rod-shaped portion 10 into an electrical signal. In this embodiment, a cylindrical member 30 having an outer diameter larger than that of the rod-shaped portion 10 is attached to the other end 10B side of the rod-shaped portion 10. The operator grips this cylindrical member 30 to operate the rod-shaped portion 10.

[0010] Furthermore, in this embodiment, a connection cable 40 connected to the conversion unit 20 and a device main body 50 connected to this connection cable 40 are provided. In this embodiment, the conversion unit 20 and the device main body unit 50 are electrically connected by a connection cable 40. The device main body 50 is fitted with a terminal device (not shown) such as a smartphone or tablet terminal.

[0011] In this embodiment, the electrical signal (information about vibration) output from the conversion unit 20 and transmitted to the device main body unit 50 via the connection cable 40 is received by the terminal device. This allows the worker to refer to information about vibrations on an application running on the terminal device. In this case, the worker can obtain information about water leaks in the pipes by referring to the terminal device.

[0012] In this embodiment, as indicated by the reference symbol 1A, a pressing member 100 is provided as an attachment that can be attached to one end 10A located on the tip side of the rod-shaped portion 10 as needed. Reference numeral 1A in FIG. 1 shows a state in which a pressing member 100 is attached to one end 10A of a rod-shaped part 10.

[0013] For example, when a pipe exists below ground and a water leak occurring in the pipe below ground is to be detected, the pressing member 100 is pressed against the ground. A through-hole 101 having a female thread formed on its inner peripheral surface is formed in the radial center of the pressing member 100. In this embodiment, one end 10A of the rod-shaped portion 10, having a male thread formed on its outer peripheral surface, is inserted into this through-hole 101, thereby attaching the rod-shaped portion 10 to the pressing member 100.

[0014] The pressing member 100 is made of, for example, a metal material such as stainless steel. The pressing member 100 is pressed against the ground and receives vibrations from the ground caused by water leakage occurring in a pipe located below the ground. In other words, the pressing member 100 advances from the front side of the ground, which is an example of a surface to be pressed, toward the ground and is pressed against the ground. The pressing member 100 receives vibrations from the ground caused by a water leak occurring in a pipe located further back than the ground in the advancing direction of the pressing member 100. In this embodiment, the case where the pressed surface is the ground will be described as an example, but other examples of the pressed surface include a wall surface, a ceiling, etc. When the pressed surface is a wall surface or a ceiling, the pressing member 100 receives vibrations from the wall surface or ceiling due to a water leak occurring in a pipe located further back than the wall surface or ceiling. In this embodiment, the vibration received by the pressing member 100 is transmitted to the conversion section 20 via the rod-shaped section 10, and the conversion section 20 converts the vibration into an electrical signal.

[0015] In this embodiment, the electrical signal regarding the vibration is output from the conversion unit 20 and transmitted to the device main body 50 via the connection cable 40. The electrical signal is then received by a terminal device attached to the device main body 50. This allows the information about vibration obtained via the pressing member 100 to be referenced on an application running on the terminal device. In other words, this application allows you to view information about leaks occurring in pipes located below ground level. In this embodiment, the vibration received by the pressing member 100 is transmitted to the conversion unit 20 via the rod-shaped portion 10, but this is not limited thereto. As shown in FIG. 1(B), the rod-shaped portion 10 may be omitted and the pressing member 100 may be fixed directly to the conversion unit 20.

[0016] Figures 2(A) to 2(D) are diagrams illustrating the pressing member 100. Figure 2(A) is a top view, Figure 2(B) is a front view, and Figure 2(C) is a bottom view. Figure 2(D) is an enlarged view of the protruding portion. As shown in FIGS. 2(A) to 2(C), the pressing member 100 of this embodiment includes a facing portion 110 that is disposed facing the ground.

[0017] As shown in Fig. 2(A), the facing portion 110 has a hexagonal shape. The facing portion 110 is formed in a plate shape. As shown in Fig. 2(B), the facing portion 110 is disposed with a gap between it and the ground. In this embodiment, the opposing portion 110 is described as being hexagonal as an example, but the opposing portion 110 may be in a shape other than hexagonal, such as a triangle, a rectangle, a pentagon, a heptagon, an octagon, a circle, or an ellipse.

[0018] 2(B) and 2(C), the pressing member 100 is provided with a plurality of protrusions 120. Each of the protrusions 120 is connected to the outer circumferential edge 111 of the opposing portion 110 (see FIG. 2(C)). As shown in FIG. 2(B), each of the protruding portions 120 protrudes from the facing portion 110 toward the ground.

[0019] In this embodiment, as shown by the reference symbol 2X in FIG. 2(D), the portion of the pressing member 100 that comes into contact with the ground has a curvature and a shape that is convex toward the ground. Specifically, in this embodiment, the tip edge 121 in the protruding direction of the protruding portion 120 is the portion that comes into contact with the ground, and this tip edge 121 has a curvature and a shape that is convex toward the ground.

[0020] As shown in FIG. 2(D), each of the protrusions 120 has a length L2 in the width direction that is greater than a length L1 in the protrusion direction. Here, the length L1 in the protruding direction of the protruding portion 120 refers to the length from the starting point, which is the connection point 115 (see Figure 2 (B)) between the opposing portion 110 and the protruding portion 120, to the tip portion 122 in the protruding direction of the protruding portion 120. Furthermore, the length L2 of the protrusion 120 in the width direction is the length in a direction perpendicular to the protrusion direction of the protrusion 120, and refers to the length of the protrusion 120 at its base.

[0021] As shown in FIG. 2(D), each of the protrusions 120 has one end 120A and another end 120B that are located at different positions in the width direction. In this embodiment, the tip edge 121 of the protruding portion 120 is given a curvature over the entire area from the one end 120A to the other end 120B.

[0022] In addition, in this embodiment, as shown in Fig. 2(C), a plurality of protrusions 120 are provided. In this embodiment, as shown in Fig. 2(C), the plurality of protrusions 120 are arranged at regular intervals in the circumferential direction of the opposing part 110. More specifically, in this embodiment, the plurality of protruding portions 120 are arranged at intervals of 120° in the circumferential direction of the facing portion 110. In this embodiment, the plurality of protrusions 120 are arranged on the same circumference R.

[0023] In this embodiment, an example in which three protrusions 120 are provided will be described, but the number of protrusions 120 is not particularly limited. The number of protrusions 120 may be 2, or may be 4 or more. Also, the number of protrusions 120 may be one. When there is only one protruding portion 120, the opposing portion 110 may not be provided, and for example, a portion corresponding to the protruding portion 120 may be attached directly to one end 10A of the rod-shaped portion 10 (see FIG. 1). Furthermore, when there is only one protrusion 120, the part corresponding to the protrusion 120 may be integrated with the rod-shaped part 10, and the part corresponding to the protrusion 120 may be provided at the tip of the rod-shaped part 10.

[0024] In addition, in this embodiment, three protrusions 120 are provided, and therefore the protrusions 120 are arranged at 120° intervals, but if, for example, two protrusions 120 are provided, it is preferable to arrange the protrusions 120 at 180° intervals. Furthermore, for example, when four protrusions 120 are provided, the protrusions 120 are preferably arranged at 90° intervals. When the number of protruding portions 120 provided is two or more, it is preferable that the protruding portions 120 provided are arranged at regular intervals in the circumferential direction of the facing portion 110. In other words, when the number of protruding portions 120 provided is two or more, it is preferable that the protruding portions 120 provided are arranged at regular angular intervals in the circumferential direction of the facing portion 110.

[0025] In this embodiment, as described above, the pressing member 100 is made of a metal material such as stainless steel. In this embodiment, the pressing member 100 is formed by bending a metal plate, and the opposing portion 110 and the protruding portion 120 are integral with each other. More specifically, in this embodiment, the material 210 for forming the pressing member 100 initially has a substantially equilateral triangular shape, as shown in FIG. 3 (a diagram showing a part of the manufacturing process of the pressing member). The pressing member 100 is formed by bending the top portion of a member having a substantially equilateral triangular shape towards one surface of the member.

[0026] 4, 5(A) and 5(B) are diagrams showing a comparative example of the pressing member 100. Note that Fig. 4 shows a front view of the comparative example of the pressing member 100. In this comparative example, as shown in FIG. 4, a straight portion 120S extending along the extension direction of the facing portion 110 is provided at the tip edge 121 of the protruding portion 120. In this comparative example, it is possible that the protrusion 120 and the ground come into contact in the state shown in FIG. 5(A), and that the protrusion 120 and the ground come into contact in the state shown in FIG. 5(B).

[0027] Specifically, there are various deposits on the ground, such as gravel and pebbles, and because the orientation and shape of each of these deposits differ, the contact state between each of the protrusions 120 and the ground may differ each time vibration is measured, as shown in Figures 5(A) and (B). In FIG. 5(A), the contact area between the protrusion 120 and the ground is small, and in FIG. 5(B), the contact area between the protrusion 120 and the ground is large. In this case, the vibration transmitted to the pressing member 100 may vary each time the vibration is measured, which may result in different measurement results.

[0028] In other words, in this case, even if the state of the water leakage occurring below the ground does not change, the vibration transmitted to the pressing member 100 may change, resulting in a situation in which the measurement results may differ. In other words, in this case, even though the pressing member 100 is pressed against the same spot on the ground, the contact state between the protrusion 120 and the ground may change with each measurement, resulting in fluctuating measurement results.

[0029] In contrast to this, in this embodiment, the measurement results are less likely to fluctuate compared to when the above-described straight section 120S is provided. Specifically, in this embodiment, as shown in (A) and (B) of Figure 6 (a diagram showing the state of contact between the protrusion 120 of this embodiment and the ground), even if the relationship between the protrusion 120 and the ground changes for each measurement, differences in the contact area between the protrusion 120 and the ground are unlikely to occur. In this case, the vibrations transmitted to the pressing member 100 are prevented from being different for each measurement, and fluctuations in the measurement results are suppressed. In other words, even when the same location is being measured, the vibrations transmitted to the pressing member 100 are less likely to change, and fluctuations in the measurement results are suppressed.

[0030] 7A and 7B are diagrams illustrating modified examples of the protrusion 120. FIG. 7(A) shows the protrusion 120 shown in FIG. 2(D) again, and FIG. 7(B) shows a modified example of the protrusion 120. In FIG. The shape of the protrusion 120 is not limited to that shown in FIG. 7(A), and may be the shape shown in FIG. 7(B). In the shape shown in FIG. 7(B), the length L1 of the protruding portion 120 in the protruding direction is greater than the length L2 of the protruding portion 120 in the width direction.

[0031] The shape of the protrusion 120 is not limited to that shown in FIG. 7(A), and may be the shape shown in FIG. 7(B). Even with the shape shown in FIG. 7(B), similarly to the above, the situation where the contact area between the protrusion 120 and the ground varies for each measurement is unlikely to occur. Although not shown, the length L2 of the protrusion 120 in the width direction may be equal to the length L1 of the protrusion 120 in the protruding direction.

[0032] In addition, the shape shown in FIG. 7(A) is more likely to increase the magnitude of vibrations that the pressing member 100 receives than the shape shown in FIG. 7(B), making it easier to improve the accuracy of water leakage detection. Specifically, the shape shown in FIG. 7(A) has a smaller curvature of the leading edge 121, and is likely to have a larger contact area between the protrusion 120 and the ground compared to the shape shown in FIG. 7(B). If the contact area is large, vibrations from the ground are more likely to be transmitted to the protruding portion 120, and the vibrations received by the entire pressing member 100 are more likely to increase. In this case, the accuracy of water leakage detection can be improved more easily than when the vibrations received by the entire pressing member 100 are small.

[0033] 8(A) and (B) are diagrams showing other modified examples of the protrusion 120. In FIG. In the embodiment shown in FIG. 2(D) above, a curvature is imparted to almost the entire periphery of the protruding portion 120. In the embodiment shown in FIG. Without being limited to this, for example, as shown by reference numerals 8A and 8B in FIG. 8(A), linear portions may be provided on the side portions 129 of the protruding portion 120 of the periphery 128 of the protruding portion 120.

[0034] In the embodiment shown in FIG. 2(D), the tip edge 121 of the protrusion 120 has a shape in which a curvature is imparted over the entire area. Alternatively, as shown in FIG. 8(B), a curvature may be imparted only to the apex 120X portion of the leading edge 121, and linear portions 120Y may be provided on both sides of the apex 120X of the leading edge 121. Even with this modified example shown in Figure 8(B), compared to when all parts of the leading edge 121 are formed in a straight line (compared to the comparative examples shown in Figures 4 and 5), the situation in which the contact area between the protrusion 120 and the ground varies each time vibration is measured is less likely to occur.

[0035] (others) The above configuration can also be applied to the case where a worker detects a water leak by pressing the rod-shaped portion 10 (see FIG. 1) directly against his or her ear. When an operator presses the rod-shaped portion 10 directly against his / her ear, if the operator attaches a pressing member 100 having a protrusion 120 shown in Figures 2, 7(B), 8(A), and (B) to the tip of the rod-shaped portion 10, the operator can detect water leaks more accurately. [Explanation of symbols]

[0036] 1... vibration information acquisition device, 20... conversion unit, 100... pressing member, 110... opposing part, 120... protruding part, 120A... one end part, 120B... other end part, 121... tip edge

Claims

1. a pressing member that is pressed against a pressed surface and receives vibrations caused by a water leak occurring in a pipe located further back than the pressed surface from the pressed surface; a portion that comes into contact with the pressed surface has a curvature and a shape that is convex toward the pressed surface, a facing portion disposed opposite the pressed surface; a protruding portion connected to the facing portion and protruding from the facing portion toward the pressed surface; Equipped with a tip edge in a protruding direction of the protruding portion is the portion that contacts the pressed surface, and the tip edge has a shape that has a curvature and is convex toward the pressed surface, The pressing member is formed by bending a metal plate, and the opposing portion and the protruding portion are integrated with each other. Pressing member.

2. The pressing member according to claim 1 , wherein the length of the protruding portion in the width direction is greater than the length in the protruding direction.

3. the protrusion has one end and another end that are positioned differently in the width direction; The pressing member according to claim 1 or 2, wherein a curvature is imparted to the tip edge of the protruding portion over the entire area from the one end to the other end.

4. The protrusion is provided in plurality, the facing portion is formed in a plate shape and is disposed so as to face the pressed surface, 4. The pressing member according to claim 1, wherein the protruding portions are arranged at regular intervals in the circumferential direction of the opposing portion.

5. a pressing member that is pressed against a pressed surface and receives vibrations caused by a water leak occurring in a pipe located further back than the pressed surface from the pressed surface; a portion that comes into contact with the pressed surface has a curvature and a shape that is convex toward the pressed surface, a plate-shaped protruding portion protruding toward the pressed surface, a tip edge of the plate-shaped protrusion in a protruding direction is the portion that contacts the pressed surface, and the tip edge has a curvature and a shape that is convex toward the pressed surface; Pressing member.

6. Further comprising an opposing portion arranged opposite the pressed surface, the plate-shaped protruding portion is connected to the opposing portion and protrudes from the opposing portion toward the pressed surface, The plate-shaped protrusion is provided in plurality, The plurality of plate-shaped protruding portions are arranged side by side in the circumferential direction of the opposing portion and are provided so as to extend in the circumferential direction. The pressing member according to claim 5 .

7. a pressing member that is pressed against the pressed surface and receives, from the pressed surface, vibrations caused by a water leak occurring in a pipe located on the back side of the pressed surface; a conversion unit that converts the vibration received by the pressing member into an electric signal; Equipped with a vibration information acquisition device in which a portion of the pressing member that comes into contact with the pressed surface has a curvature and a shape that is convex toward the pressed surface, The pressing member is a facing portion disposed opposite the pressed surface; a protruding portion connected to the facing portion and protruding from the facing portion toward the pressed surface; Equipped with a tip edge in a protruding direction of the protruding portion is the portion that contacts the pressed surface, and the tip edge has a shape that has a curvature and is convex toward the pressed surface, The pressing member is formed by bending a metal plate, and the opposing portion and the protruding portion are integrated with each other. Vibration information acquisition device.

8. a pressing member that is pressed against the pressed surface and receives, from the pressed surface, vibrations caused by a water leak occurring in a pipe located on the back side of the pressed surface; a conversion unit that converts the vibration received by the pressing member into an electric signal; Equipped with a vibration information acquisition device in which a portion of the pressing member that comes into contact with the pressed surface has a curvature and a shape that is convex toward the pressed surface, the pressing member includes a plate-shaped protruding portion that protrudes toward the pressed surface, a tip edge of the plate-shaped protrusion in a protruding direction is the portion that contacts the pressed surface, and the tip edge has a curvature and a shape that is convex toward the pressed surface; Vibration information acquisition device.

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