JP2015155251A - Shock resistance mechanism and ship mounted device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize space saving of a shock resistance mechanism.

SOLUTION: A shock resistance mechanism comprises: a foam member 1 disposed to be closely attached to a surface of ship equipment B installed in a ship; and a casing 2 covering the ship equipment B and the foam member 1 to be closely attached to the foam member 1 so as to fix the foam member 1 to the ship equipment B. The ship equipment B is a display device B having a rectangular front surface provided with a display surface hm and having a side surface provided with projecting portions cv along sides of the rectangular shape. The foam member 1 is an NP gel and disposed to be closely attached to top sides c1, front sides c2, and opposite sides (rear sides c3) of the projecting portions cv of the display device B.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to an impact resistance mechanism and a ship mounting device.

  A marine equipment mounted on a marine vessel must satisfy predetermined regulations regarding environmental performance such as temperature resistance, humidity resistance, vibration resistance, and shock resistance. Among these environmental resistance performances, a plurality of grades are provided for the impact resistance performance, and in the severest conditions, a very high impact resistance performance is required. For example, in order to reduce the impact transmitted from the surrounding structure to the marine equipment, a mechanism similar to the invention described in the following Patent Document 1 is adopted, that is, between the marine equipment and the surrounding structure, By adopting a shock-resistant mechanism that arranges a helical metal spring called a helical mount or a vibration-resistant elastic rubber as a support member to support marine equipment, the required impact resistance performance is achieved. ing.

JP 2002-367361 A

  By the way, in the said prior art, although the metal spring and elastic rubber are employ | adopted as a supporting member, there existed a problem that a big space was needed by employ | adopting a metal spring and elastic rubber as a supporting member. That is, in the above prior art, when a metal spring is employed, a large space is required between the marine equipment and the surrounding structure in accordance with the number of windings in order to obtain the required shock absorbing force. It was. In addition, when elastic rubber is used in the above prior art, a large space is required between the marine equipment and the surrounding structure to increase the thickness of the elastic rubber in order to obtain the required shock absorption capacity. It became. As described above, in the conventional technology, a large space is required for the impact resistance mechanism, and as a result, the size of the entire apparatus in which the impact resistance mechanism is installed in the marine equipment has been increased.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to realize space saving of an impact resistant mechanism.

  In order to achieve the above object, in the present invention, as a first solving means related to an impact resistance mechanism, a foam member disposed so as to be in close contact with the surface of a marine equipment installed in a marine vessel, and the foam member A means is provided that includes the marine equipment and a casing that covers the foaming member so as to adhere and fix the foaming member to the marine equipment.

  In the present invention, as the second solving means relating to the impact resistance mechanism, in the first solving means, a means that the foamed member is NP gel is adopted.

  In the present invention, as a third solving means relating to the impact resistance mechanism, in the first or second solving means, the marine equipment has a rectangular shape on the front surface on which the display surface is provided. It is a display device in which a convex part is provided on a side surface along the side, and the foaming member is in close contact with the top side, the front side, and the opposite side (back side) of the convex part of the display device. The means of being arranged in is adopted.

  In the present invention, as a fourth solving means relating to the impact resistance mechanism, in the third solving means, a plurality of the convex portions are provided on each side surface of the display device, and the display is provided between the convex portions. A means is provided in which a gap for passing a screw used for fixing the apparatus to the installation place is provided, and the foamed member is disposed on each of the plurality of convex portions.

  In the present invention, as a fifth solving means related to the impact resistance mechanism, in the third or fourth solving means, the display device is disposed on the convex portion provided on the side surface of the rectangular short side. Further, a means is adopted in which the thickness of the foam member is thicker than that of the foam member disposed on the convex portion provided on the long side surface of the rectangular shape.

  In the present invention, as a first solving means related to the ship-mounted device, it comprises a marine equipment installed on a marine vessel, and an impact resistance mechanism that reduces an impact transmitted to the marine equipment, A foam member disposed so as to be in close contact with the surface of a marine equipment installed on a ship, and the marine equipment and the foam member so as to be in close contact with the foam member and fix the foam member to the marine equipment. A means of having a casing that covers is adopted.

  In the present invention, as the second solving means relating to the ship mounting device, in the first solving means, a means that the foam member is NP gel is adopted.

  In the present invention, as a third solving means relating to the ship mounting device, in the first or second solving means, the marine equipment has a rectangular front surface provided with a display surface, and the rectangular shape It is a display device in which a convex part is provided on a side surface along the side, and the foaming member is in close contact with the top side, the front side, and the opposite side (back side) of the convex part of the display device. The means of being arranged in is adopted.

  In the present invention, as a fourth solving means relating to the ship mounting device, in the third solving means, a plurality of the convex portions are provided on each side surface of the display device, and the display is provided between the convex portions. A means is provided in which a gap for passing a screw used for fixing the apparatus to the installation place is provided, and the foamed member is disposed on each of the plurality of convex portions.

  In the present invention, as the fifth solving means relating to the ship-mounted device, in the third or fourth solving means, the display device is arranged on the convex portion provided on the side surface of the rectangular short side. Further, a means is adopted in which the thickness of the foam member is thicker than that of the foam member disposed on the convex portion provided on the long side surface of the rectangular shape.

  According to the present invention, it is possible to realize space saving of the impact-resistant mechanism by using the foamed member disposed so as to be in close contact with the surface of the marine equipment installed in the marine vessel.

It is the front view (a), top view (b), and left view (c) of the impact-resistant mechanism A which concerns on one Embodiment of this invention. It is a perspective view of the impact resistance mechanism A which concerns on one Embodiment of this invention. It is the plane schematic diagram (a) and the left side schematic diagram (b) of the impact-resistant mechanism A which concerns on one Embodiment of this invention. It is a figure which shows the characteristic regarding the raw material of the foaming member 1 in one Embodiment of this invention. It is a figure which shows the impact resistance experiment result of the impact resistance mechanism A which concerns on one Embodiment of this invention. It is a figure which shows the impact resistance experiment result of the conventional impact resistance mechanism.

Embodiments of the present invention will be described below with reference to the drawings.
The impact resistance mechanism A according to the present embodiment absorbs and reduces the impact transmitted from the surrounding structure to the marine equipment installed in the marine vessel, and is installed in the marine vessel as shown in FIGS. The foam member 1 disposed so as to be in close contact with the surface of the marine equipment to be used, and the casing covering the marine equipment and the foam member 1 so as to be in close contact with the foam member 1 and fixing the foam member 1 to the marine equipment. 2.

  The marine equipment is, for example, the display device B shown in FIG. The display device B is installed in an engine room that houses engines such as a steam turbine, a diesel engine, and a gas turbine mounted on a ship, and is connected to a control device that controls the operation of the engine via a communication cable. And displaying information related to the operating state of the engine based on data input from the control device.

  Such a display device B is, for example, a liquid crystal monitor or the like, and a front surface fm on which a display surface hm is provided has a rectangular shape, and the rectangular long side surface s1 has three sides along the rectangular side. Convex portions cv are provided, and two convex portions cv are provided along the rectangular side on the side surface s2 on the short side of the rectangular shape. That is, the display device B is provided with ten convex portions cv. These convex portions cv have a rectangular parallelepiped shape, and a gap gp for passing a screw used for fixing the display device B to the installation location of the engine room is provided therebetween.

  In addition to the display device B as a ship device, for example, a gyro compass, a GPS (Global Positioning System) receiver, an electronic chart device, a radar / ARPA (Automatic Radar Plotting Aids) , Equipped with an automatic ship identification device (AIS: Automatic Identification System), an autopilot and a general control device.

The gyrocompass uses a rotating or vibrating mechanical gyroscope or an optical gyroscope such as a fiber optic gyroscope or ring laser gyroscope to detect the traveling direction of a ship, and a traveling direction detection signal indicating the traveling direction Is output.
A GPS receiver is a GPS-compliant positioning device, which has a receiving antenna installed at a predetermined location (a bow or stern) of a ship, and in a geodetic coordinate system based on positioning radio waves received by the receiving antenna. The position (latitude and longitude) of the receiving antenna is detected as the position of the ship.

The electronic chart device displays the chart of the desired sea area on the display by processing the electronic chart data with a dedicated computer, and further determines the navigation direction and navigation position of the ship based on various information obtained from the gyrocompass and GPS receiver. It displays on the chart and monitors the actual route with respect to the planned route.
Radar / ARPA automatically captures obstacles such as nearby ships based on information obtained from the radar, calculates the direction and distance to the obstacle, displays it, and calculates the degree of collision risk. In addition, when the ship approaches the obstacle and becomes dangerous, an alarm is issued and information necessary for maneuvering to avoid the obstacle is displayed.

The automatic ship identification device regularly sends navigation information such as own ship position information and ship maneuvering information, ship specific information such as ship name and cargo to the surroundings, and receives these information sent from other ships. Are displayed.
The autopilot realizes automatic steering by driving the rudder of a ship based on a preset planned route.

  The overall control device includes a CPU (Central Processing Unit), a ROM (Read Only Memory) and a RAM (Random Access Memory), and an interface circuit that transmits and receives various signals to and from each electrically connected part. The overall control device controls various operations of the ship by performing various arithmetic processes based on various control programs stored in the ROM and communicating with each unit.

  In the same manner as the display device B, the impact resistance mechanism A can be applied to marine equipment such as the gyrocompass, GPS receiver, electronic chart device, radar / ARPA, automatic ship identification device, autopilot, conning display, and general control device. May be provided to absorb the impact transmitted from the surrounding structure to these marine equipments.

  Returning to FIG. 1, the foam member 1 of the impact resistance mechanism A is, for example, an NP gel (in the form of a rectangular sheet having the same length as the length direction of the rectangular parallelepiped projections and a thickness of 6 mm). (Foaming gel) and arranged so as to be in close contact with the three sides of the top side c1, the front side c2, and the front side c2 (back side) c3 of each projection cv of the display device B. That is, in each convex part cv, the three foam members 1 are arranged so as to be in close contact with the top part c1, the front part c2, and the rear part c3. Such a foam member 1 absorbs and reduces the impact transmitted from the surrounding structures to the display device B.

  Further, the NP gel used as the foaming member 1 can be used in a wide temperature environment of −40 to 200 degrees, has a small compression set as compared with other foam materials, and has a performance even when used for a long time. It has the feature that it is hard to change. Moreover, since NP gel is excellent in weather resistance and ozone resistance, it can be used under severe conditions such as outdoors.

  The housing 2 includes a first cover 21 that covers the front side of the display device B, a second cover 22 that covers the foamed member 1, and a screw 23 that connects the first cover 21 and the second cover 22 ( (Double circle shown in FIG. 1A).

  The first cover 21 covers the front side of the display device B, is made of a predetermined metal or resin material, and is arranged at the center of the rectangular plate member that is slightly larger than the front surface of the display device B. An opening 21a is provided in accordance with the size of the display surface hm so that the display surface hm can be exposed. Around the opening 21 a of the first cover 21, a display in which a plurality of screw holes to which the screws 23 are attached to connect the first cover 21 to the second cover 22 and an impact resistant mechanism A are attached. A plurality of screw holes 21b (single circles shown in FIG. 1 (a)) for fixing the device B to a predetermined installation place in the engine room are provided.

  The second cover 22 covers the foamed member 1 and is made of the same material as the first cover 21 and is provided for each convex portion cv. The second cover 22 is formed on the outer shape of the foam member 1 in order to closely cover the foam member 1 disposed on the top side c1, the front side c2, and the back side c3 of each projection cv of the display device B. Along with the concave shape, the rectangular parallelepiped convex portion cv has the same length as the length direction. Each second cover 22 is provided with a plurality of screw holes to which screws 23 are attached in order to connect the second cover 22 to the first cover 21. The second cover 22 and the foamed member 1 are bonded by a double-sided tape (not shown).

  The screw 23 is attached to the screw hole provided in the screw hole of the first cover 21 and the screw hole of the second cover 22, and the second cover 22 is screwed to the back surface 21 c of the first cover 21. To fix. Further, a second screw (not shown) different from the screw 23 is mounted in the screw hole 21b of the first cover 21, and the display device B is fixed to the predetermined installation location in the engine room of the ship by screwing. To do.

Next, detailed features of the foamed member 1 of the impact resistant mechanism A configured as described above will be described.
As described above, the NP gel (foamed gel) used as the foaming member 1 can be used in a wide temperature environment of −40 to 200 degrees as shown in FIG. 4. The NP gel has a specific gravity of “0.26”, a tensile strength of “0.32 Mpa”, an elongation of “73%”, a Young's modulus of “269.5 kPa” (stress required per unit strain), and a specific heat of “1.15 J / g · k ”, thermal conductivity“ 0.06 W / m · k ”, compression set“ 0.02% (compression rate 50%) ”. The foamed member 1 can be stored semi-permanently only if it is kept in stock, and the surface is powder-coated.

  Moreover, there exist a gel tape, a solvo sheet, and a hypergel sheet as a material examined besides NP gel. The gel tape is made of silicon gel and is a tape with an adhesive material (pressure-sensitive adhesive) on one side. For example, the gel tape is an anti-vibration buffer material used for anti-vibration and buffering a substrate in an electronic device. As shown in FIG. 4, such a gel tape can be used in a temperature environment of −40 to 100 degrees, and the surface is powder-coated. The gel tape has a powder coating on the surface.

  The solvo sheet is formed by forming an ether-based polyurethane into a sheet shape, and exhibits high shock absorption, high vibration damping, and excellent shock absorption over a wide temperature range. As shown in FIG. 4, such a solvo sheet has a hardness of “30”, a specific gravity of “1.35”, a tensile strength of “0.32 Mpa”, an elongation of “338%”, and a compression set of “60.6% (compression). Rate 25%) ”.

  Hypergel sheet is a sheet of ultra-soft urethane gel that has high energy absorption, durability and strength, and maintains high vibration resistance even when the frequency and temperature change. Softer than natural rubber. As shown in FIG. 4, such a hypergel sheet can be used in a temperature environment of −30 to 80 degrees, and has a hardness of “15”, a specific gravity of “1.08”, a tensile strength of “0.83 Mpa”, and an elongation. It has physical properties of “1000%”, Young's modulus “540 Kpa”, compression set “8.1% (compression rate 25%)”. Moreover, when the hypergel sheet is used near an electric appliance such as a power adapter that is continuously heated, deterioration may be promoted and may be dissolved.

  Among these materials, NP gel has features that it can be used in a wide range of temperatures compared to foams of other materials, has a low permanent compression set, and does not change its performance even when used for a long time. It is. Furthermore, since NP gel is excellent in weather resistance and ozone resistance, it has a feature that it can be used under severe conditions such as outdoors. By using the NP gel having the above-described characteristics as the foamed member 1, the performance is hardly changed even in a severe environment such as an engine room of a ship and can be used for a long time.

  Moreover, as a demonstration experiment, when the impact resistance mechanism A using NP gel as the foaming member 1 is attached to the display device B in which the acceleration sensor is installed, the impact resistance mechanism using elastic rubber instead of the NP gel as in the past An experiment was conducted in which the iron block was hit with the case of wearing. In addition, the iron block is struck 3 times each in the impact resistance mechanism A using NP gel as the foaming member 1 and the impact resistance mechanism using elastic rubber. FIG. 5 shows a result measured by the acceleration sensor when the shock resistant mechanism A is mounted on the display device B. FIG. FIG. 6 shows a result measured by an acceleration sensor when an impact resistance mechanism using elastic rubber is mounted. As shown in FIG. 5, when the shock resistant mechanism A is attached to the display device B, the impact measured by the acceleration sensor is about 200G. On the other hand, as shown in FIG. 6, when an impact resistance mechanism using elastic rubber is attached to the display device B, the impact measured by the acceleration sensor is 1000 G or more. As a result of the demonstration experiment, when NP gel is used as the foaming member 1, it is clear that high impact resistance is obtained as compared with the case where elastic rubber is used as in the past (however, the weight of the device, Impact resistance varies depending on the shape).

According to such this embodiment, the space-saving of the impact-resistant mechanism A can be achieved by using the foamed member 1 disposed so as to be in close contact with the surface of the marine equipment (display device B) installed on the marine vessel. realizable. For example, the conventional impact resistance mechanism accommodates the display device B of 9.4 inches, but the present embodiment is larger than the conventional one, although the size of the housing 2 is not different from the conventional one. A 12.1 inch display device B can be accommodated. In other words, the present embodiment is reduced in thickness by the amount that can accommodate a larger display device B than the conventional one, and space saving can be realized.
In the present embodiment, the foam member 1 has a lower specific gravity than a helical metal spring called a helical mount or an elastic rubber for vibration resistance.

  As described above, according to the present embodiment, as a result of space saving and weight reduction, it is possible to save labor for maintenance such as installation and replacement. In addition, according to the present embodiment, it is possible to mount a larger marine equipment on a ship even in a limited space due to space saving. Further, according to the present embodiment, the foamed member 1 can be formed and used in the form of a sheet, so that the structural design of the impact resistant mechanism A is facilitated. As a result, the cost of the impact resistant mechanism A is reduced. .

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, For example, the following modifications can be considered.
In the said embodiment, the foaming member 1 arrange | positioned at the convex part cv provided in the side s1 of the long side in the display apparatus B, and the foaming member arrange | positioned in the convex part cv provided in the side s2 of the short side. Although the thickness with 1 is the same 6 mm, this embodiment is not limited to this. The convex part cv provided on the side surface s2 on the short side in the display device B has a smaller area in contact with the surrounding structure than the convex part cv provided on the side surface s1 on the long side. Therefore, the thickness of the foamed member 1 disposed on the convex portion cv provided on the short side surface s2 is arranged on the convex portion cv provided on the long side surface s1. The foamed member 1 may be thicker.

  A ... Shock resistant mechanism, 1 ... foamed member, 2 ... housing, B ... display device, hm ... display surface, fm ... front, s1 ... side, s2 ... side, cv ... convex, gp ... gap, 21 ... first 1 cover, 22 ... second cover, 23 ... screw, c1 ... top side, c2 ... front side, c3 ... back side, 21a ... opening, 21b ... screw hole, 21c ... back side

Claims (10)

A foam member disposed so as to be in close contact with the surface of the marine equipment installed in the marine vessel;
An impact-resistant mechanism comprising: the marine equipment and a casing that covers the foaming member so as to be in close contact with the foaming member and fix the foaming member to the marine equipment.   The impact-resistant mechanism according to claim 1, wherein the foamed member is an NP gel. The marine equipment is a display device in which a front surface provided with a display surface has a rectangular shape, and a convex portion is provided on a side surface along the side of the rectangular shape,
The said foaming member is arrange | positioned so that it may closely_contact | adhere to the top part side of the said convex part of the said display apparatus, the front side, and the opposite side (back side) of the front side. Shock resistant mechanism. Each side surface of the display device is provided with a plurality of the convex portions and a gap for passing a screw used to fix the display device to an installation place between the convex portions,
The impact-resistant mechanism according to claim 3, wherein the foamed member is disposed on each of the plurality of convex portions.   The thickness of the foamed member disposed on the convex portion provided on the side surface of the rectangular short side of the display device is disposed on the convex portion provided on the long side surface of the rectangular shape. The impact-resistant mechanism according to claim 3 or 4, wherein the impact-resistant mechanism is thicker than the foamed member. A marine equipment installed on a marine vessel, and an impact resistance mechanism that reduces an impact transmitted to the marine equipment,
The impact resistance mechanism includes a foam member disposed so as to be in close contact with a surface of a marine equipment installed on the marine vessel, and the marine vessel so as to be in close contact with the foam member and fix the foam member to the marine equipment. The ship mounting apparatus characterized by having a housing | casing which covers the apparatus for use and the said foaming member.   The ship mounting apparatus according to claim 6, wherein the foamed member is an NP gel. The marine equipment is a display device in which a front surface provided with a display surface has a rectangular shape, and a convex portion is provided on a side surface along the side of the rectangular shape,
The said foaming member is arrange | positioned so that it may closely_contact | adhere to the top part side of the said convex part of the said display apparatus, the front side, and the opposite side (back side) of the front side. Ship mounted equipment. Each side surface of the display device is provided with a plurality of the convex portions and a gap for passing a screw used to fix the display device to an installation place between the convex portions,
The ship mounting device according to claim 8, wherein the foam member is disposed on each of the plurality of convex portions.   The thickness of the foamed member disposed on the convex portion provided on the side surface of the rectangular short side of the display device is disposed on the convex portion provided on the long side surface of the rectangular shape. The ship mounting apparatus according to claim 8 or 9, wherein the apparatus is thicker than the foamed member.