JP2006226325A - Vibration/impact absorbing casing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration/impact absorbing casing capable of effectively absorbing vibration/impact due to resonance at a natural frequency of a vibration-proofing material for bearing the casing by preventing a support member in a case from being crushed by a self-weight of a consumer product. <P>SOLUTION: The vibration/impact absorbing casing is composed so that the case 6 is arranged in the casing 1 born via the vibration-proofing material 2 and the consumer products 3A, 3B requiring a vibration-proofing countermeasure are stored in the case. A gel-like sheet 5 capable of absorbing vibration/impact is mounted to the inner wall of the case 6 so as to be tightly adhered to the upper/lower faces and side faces of the consumer product. The support member 4 with variable elastic force is provided so as to bear the lower face of the consumer product in the case. A support height of the consumer product is adjusted by adjusting the elastic force of the support member. Consequently, it is possible to prevent the gel-like sheet mounted to the lower face of the consumer product from being crushed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vibration / shock absorber for a housing that is mounted on a truck or the like and that accommodates and transports an electronic device or the like. In the housing that is supported via the vibration isolating material, the natural frequency of the vibration isolating material is The present invention relates to a vibration / shock absorbing casing that absorbs vibrations / shock due to resonance in the case.

  A conventional vibration / shock absorbing housing holds a case for storing consumer products that require anti-vibration measures in a housing supported via a vibration isolator, and a support provided between the case and the consumer products. A consumer product is supported through a member, and vibration / impact on the consumer product is absorbed by different vibration damping characteristics of the vibration isolator and the support member (see, for example, Patent Document 1).

JP-A-9-204766 (paragraph 0020)

  Since the conventional vibration / shock absorbing housing is configured as described above, when a heavy-duty consumer product is stored, the support member in the case is crushed by its own weight, and the vibration damping characteristics of the support member are reduced. There was a problem that it was not possible to make full use.

  In addition, some of the support members in the case are made of spring material to prevent the product from being crushed by its own weight. In this case, if there are multiple consumer products, On the other hand, there is a problem that it is necessary to individually manufacture a spring having a spring constant corresponding to each mass.

  The present invention has been made to solve the above-described problems, and prevents the support member in the case from being crushed by the own weight of a consumer product, and at the natural frequency of the vibration isolator that supports the housing. An object of the present invention is to provide a vibration / shock absorbing housing that can effectively absorb vibrations / shock due to resonance of the.

  The vibration / shock absorbing casing according to the present invention is a vibration / shock absorbing casing in which a case is disposed in a casing supported via a vibration isolating material, and a consumer product requiring anti-vibration measures is stored in the case. In the shock-absorbing housing, a gel-like sheet capable of absorbing vibration and shock is attached to the inner wall of the case so as to be in close contact with the upper and lower surfaces and side surfaces of the consumer product, and the lower surface of the consumer product is supported in the case. As described above, a support member having a variable elasticity is provided, and the support height of the consumer product is adjusted by adjusting the elasticity of the support member so that the gel sheet attached to the lower surface of the consumer product is not crushed. It is a thing.

  The vibration / shock absorbing casing according to the present invention is configured as described above, and is provided with a support member capable of changing elasticity to support the lower surface of the consumer product in the case, and adjusts the elasticity to float the consumer product. The gel-like sheet that is in close contact with the top and bottom and side surfaces of the consumer product and protects the consumer product from vibration and shock is prevented from being crushed by the weight of the consumer product. The shock absorbing characteristics can be fully utilized.

  In addition, since the elasticity of the support member can be changed, the amount of subsidence of the support member can be adjusted according to the mass by adjusting the elasticity for consumer products having different masses. Even when supporting a plurality of different consumer products, there is no need to manufacture individual support members for each consumer product, and the number of parts can be reduced.

  Furthermore, when the consumer product support plate is supported by the housing via the spring, the gel sheet is brought into close contact with the consumer product in a state where the weight of the consumer product and the spring reach an equilibrium state. Therefore, it is not necessary to produce a spring for each consumer product having a different mass, and the parts can be unified.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings. 1A and 1B are cross-sectional views illustrating the configuration of the first embodiment, where FIG. 1A is a schematic diagram illustrating the configuration within a housing, and FIG. 1B is a schematic diagram illustrating the configuration of a support member that supports a consumer product within a case. is there.

  When a consumer product such as an electronic device is transported by a truck or the like, a shelter or a container (not shown) is mounted and secured to the truck, and a casing 1 as shown in FIG. A plurality of consumer products 3A and 3B are accommodated therein. The storing method will be described later.

  Anti-vibration material 2 that satisfies the anti-vibration specifications of consumer products 3A and 3B is provided between the lower surface of the housing 1 and the shelter or container, so that vibration can be attenuated over a wide frequency range from 5 to 400 Hz. Is doing.

  However, the vibration isolator 2 resonates at its natural frequency, and at that frequency, there is a possibility that vibration larger than the vehicle-mounted vibration may be given to the housing 1. In order to absorb, the inside of the housing 1 is configured as follows.

  That is, two cases 6 for storing consumer products are fixed up and down at an angle 7, and vibrations and shocks are absorbed between the upper and lower surfaces and side surfaces of the consumer products 3A and 3B stored in each case and the inner wall of the case 6. A suitable number of support members 4 for supporting the lower surfaces of the consumer products 3A and 3B are provided while the gel-like sheet 5 to be attached is attached and brought into close contact with the consumer products 3A and 3B.

  Although details of the support member 4 will be described later, the support member 4 is configured to be able to vary the elasticity, and supports the consumer products 3A and 3B from below and floats. FIG. 1 (a) shows an example in which two consumer products are stored in the housing 1, but it goes without saying that other numbers may be used.

  This support member 4 is large in the gel-like sheet 5 because the vibration / impact damping function does not function when the gel-like sheet 5 mounted on the lower surface of the consumer goods 3A, 3B is crushed by the weight of the consumer goods 3A, 3B. This is to hold the consumer products 3A and 3B from below and keep them floating so that their own weight is not applied.

FIG. 1B is a schematic view showing the configuration of the support member 4 in an enlarged manner.
An elastic bag-shaped member 9 made of rubber or the like is filled with a viscous incompressible fluid 10 such as water or oil, and a nut portion 11 is attached to the bag-shaped member 9. The adjustment screw 12 is screwed into the bag-like member 9 from the outside.

  By adjusting or loosening the screw, the tip of the adjusting screw 12 extends or retracts into the bag-like member 9, thereby adjusting the elasticity by changing the internal volume of the bag-like member 9. By adjusting the elasticity according to the mass of the consumer products 3A and 3B, the gel sheet 5 mounted on the lower surface of the consumer products 3A and 3B is not crushed by the own weight of the consumer products. It is what you want to do.

  If the consumer product 3A has a larger mass than the consumer product 3B and the gel-like sheet 5 of the consumer product 3A is crushed larger than the gel-like sheet 5 of the consumer product 3B, the support member 4 provided below the consumer product 3A. When the adjustment screw 12 is tightened many times and the inner volume of the bag-like member 9 is reduced, the pressure in the bag-like member 9 becomes larger than the gas state equation PV = constant (P: pressure, V: volume), and the bag-like member 9 The member 9 is hardened, and it can be adjusted so that the crushing margin of the consumer product 3A is reduced and the gel sheet 5 is not subjected to a large weight.

  As a result, when a load is applied to the consumer products 3A and 3B during resonance at the natural frequency of the vibration isolator 2 of the housing 1, the bag-like member 9 is deformed, and the vibration / shock absorbing action of the gel-like sheet 5 is effective. Can function and absorb the vibrations and shocks of consumer products.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a schematic diagram showing the configuration of the second embodiment. As shown in this figure, the same structure as the support member 4 shown in FIG. 1B is positioned on the bottom plate 6A of the case 6 or another support plate 6A by the adjusting screw 12, and the bag-like member 9 is used. A pressing device 30 is provided on each of the four sides of the bag so that the bag-like member 9 can be pressed from the outside.

  The pressing device 30 has a support base 15 fixed to the bottom plate or the support plate 6A, a screw hole formed in the support base 15, and a screw 14A having a knob 14 from the horizontal direction into the screw hole. The movable plate 13 provided at the end is brought into contact with the bag-like member 9.

  When the knob 14 is rotated so that the screw 14A advances inward, each movable plate 13 presses the bag-like member 9 to increase the size of the bag-like member 9 in the height direction. Since the lower surfaces of the consumer products 3A and 3B to be shown are pushed up, the gel-like sheet 5 can be adjusted so that a large weight is not applied.

  The configuration of the support member 4 is not limited to that shown in FIG. 1B. The nut portion 11 and the adjusting screw 12 are removed from the bag-like member 9 and the bag-like member 9 alone is used to form an incompressible fluid. Alternatively, the same effect can be expected by using a sealed compressive fluid.

  In addition, as shown in FIG. 3, the incompressible fluid filled in the bag-like member 9 is changed to a compressible fluid 16 such as air, and gas is injected and discharged from the gas inlet 17. However, the same effect can be expected. Furthermore, in the consumer products 3A and 3B, when electrical conduction is required, the bag-like member 9 of the support member 4 can be made of a conductive material to ensure electrical conduction.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 4 shows that the self-weight 3 </ b> A is received by the screw 12 and the spring 18 instead of the support member 4 so that the gel-like sheet 5 can be adjusted so as not to receive a large weight.

  Since the height of the spring contact surface is changed by turning the adjusting screw 12 screwed with the threaded portion cut in the case 6 according to the sinking amount when the consumer product 3A is placed on the spring 18, the height of the spring contact surface changes. The same effect as that of the embodiment can be expected.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 5 shows a structure in which a support plate 20 is supported by a spring 18 attached to the housing 1, and a consumer product 3 </ b> A is placed on the support plate 20. In addition, the support plate 20 is provided with a movable angle 19 that can move in the vertical direction and the side surface direction as indicated by arrows on the upper and lower surfaces and the side surface, respectively.

  When the consumer product 3A is placed on the support plate 20, the spring 18 contracts in accordance with its own weight and reaches an equilibrium state with a certain amount of displacement. In this state, the movable angles 19 are indicated by arrows from the periphery of the consumer product 3A. In this way, the gel sheet 5 is mounted between the inner wall of the movable angle 19 on the upper surface and the side surface and the consumer product 3A, and the inner wall of the movable angle 19 on the lower surface and the support plate 20 The gel sheet 5 is also mounted between them.

  As a result, the gel-like sheet 5 on the lower surface of the support plate 20 can be made to function satisfactorily without causing the gel-like sheet 5 to be crushed. It is possible to absorb vibrations and shocks due to the resonance of the product 3A.

  The same effect can be expected even if the shape of the spring 18 is various shapes such as a coil spring, a laminated leaf spring, a spiral spring, and a spring spring. Further, the same effect can be achieved by using a material such as rubber having elasticity instead of the spring 18.

Embodiment 5. FIG.
Next, a fifth embodiment of the present invention will be described with reference to the drawings. 6A and 6B are schematic views showing the configuration of the fifth embodiment, in which FIG. 6A is a front sectional view, and FIG. 6B is a sectional view taken along line AA in FIG.
As shown in these drawings, instead of the support member 4 in the first and second embodiments, a bent metal fitting 21 formed by bending spring steel into a substantially V shape is attached to the lower surface of the consumer product 3A. is there

  In this embodiment, the amount of sinking of the consumer product 3A can be changed by changing the number of the bent metal fittings 21 according to the difference in mass of the consumer product 3A. Therefore, as in the above-described embodiments. Can be expected.

It is sectional drawing which shows the structure of Embodiment 1 of this invention, (a) is the schematic which shows the structure in a housing | casing, (b) is the schematic which shows the structure of a supporting member. It is the schematic which shows the structure of Embodiment 2 of this invention. It is a schematic sectional drawing which shows another Example of Embodiment 2 of this invention. It is a schematic sectional drawing which shows the structure of Embodiment 3 of this invention. It is a schematic sectional drawing which shows the structure of Embodiment 4 of this invention. It is a schematic sectional drawing which shows the structure of Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case, 2 Anti-vibration material, 3A, 3B Consumer goods, 4 Support member, 5 Gel-like sheet, 6 Case, 7 Angle, 9 Bag-like member, 10 Incompressible fluid,
DESCRIPTION OF SYMBOLS 11 Nut part, 12 Adjustment screw, 13 Movable plate, 14 Knob, 14A Screw, 15 Support stand, 16 Compressible fluid, 17 Gas inlet, 18 Spring,
19 movable angle, 20 support plate, 21 bent metal fitting, 30 pressing device.

Claims (7)

  In a vibration / shock absorbing housing in which a case is placed in a housing supported via a vibration isolator and consumer products that require anti-vibration measures are housed in the case, vibration is applied to the inner wall of the case.・ A gel-like sheet capable of absorbing impact is attached so as to be in close contact with the upper and lower surfaces and side surfaces of the consumer product, and a support member with variable elasticity is provided so as to support the lower surface of the consumer product within the case. The vibration / shock absorbing casing is characterized in that the support height of the consumer product is adjusted by adjusting the elasticity of the support member so that the gel-like sheet attached to the lower surface of the consumer product is not crushed. .   The support member includes an elastic bag-shaped member filled with an incompressible fluid therein, a nut portion attached to the bag-shaped member, and a screw threaded to the nut portion from the outside of the bag-shaped member. 2. The vibration / shock absorbing casing according to claim 1, further comprising an adjusting screw capable of changing an inner volume of the bag-like member by extending or retracting into the bag-like member.   2. The vibration / shock absorbing casing according to claim 1, wherein the support member is constituted by an elastic bag-like sealing member filled with an incompressible fluid.   A pressing device that can apply a pressing force to the four side surfaces of the support member is provided, and the height of the support member can be adjusted by pressing the support member from the side. The vibration / shock absorbing casing according to claim 2 or 3, wherein   The support member is composed of an elastic bag-shaped member filled with a compressive fluid therein and a gas injection port attached to the bag-shaped member, and is elastic by adjusting the internal pressure of the compressive fluid. The vibration / shock absorbing casing according to claim 1, wherein the vibration and shock absorbing casing can be varied.   In a vibration / shock absorbing housing in which a support plate is disposed in a housing supported via a vibration isolating material, and a consumer product requiring anti-vibration measures is placed on the support plate. Are mounted on the upper and lower surfaces and side surfaces of the support plate by movable angles that can be moved in the vertical direction and the side direction, respectively, and the consumer products are placed on the support plate surrounded by the movable angles. In addition, a gel-like sheet capable of absorbing vibration and shock is attached to the inner wall of the upper surface and the side movable angle so as to be in close contact with the upper surface and side surface of the consumer product, and between the inner wall of the lower surface movable angle and the support plate. A vibration / shock absorbing casing, characterized in that the gel-like sheet is mounted on the casing.   7. The vibration / shock absorbing casing according to claim 6, wherein the gel-like sheet is mounted in a state in which the weight of the consumer product and the spring reach an equilibrium state.

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