IL47480A - Shock protected device - Google Patents

Description

Shock protected device The invention relates to shock equipment in electrical communication If such equipment with its sensitive components is subjected to hard and mechanical then corresponding measures must be provided to protect it against fall and For this it is for from German Patent Specification 1 209 use protective in which there is in each of the eight corners a rubber bearing for holding the freely swinging Insofar as the equipment must be accessible in the operational state and at the same time water tightness is the outer housing has been reduced to a frame construction with a similar shock absorber This facilitates the access to adjusting elements The disadvantage of this construction in addition to the additional weight and larger the increased mechanical in the case such the absorption of shocks depends very heavily on the direction the shock so for when the equipment falls on an outer surface the loading of the sensitive incorporated components is the The present invention is therefore seeks to provide a construction avoids or reduces the said According to a first aspect of the there is provided a shock protected equipment unit comprising flattened corners surfaces are each perpendicular to a diagonal of a notional cuboid fitting in the equipment unit corners and on which are mounted sphere shaped shock absorbers of elastic the shock absorbers being flattened on the side adjacent element so as to mate with the flattened According to a second aspect the invention its corners are flattened at right angles to the appropriate diagonals of an imaginary cuboid fitting in the corners of the equipment and are each connected to a shock absorber of elastic the shock absorber being so flattened on the side facing the equipment that the spherical diameter at right angles to the flattened side is in alignment with the respective space diagonals of the The invention will now be described greater by way of example with reference to the in Figure 2 shows graphically the action of the piece of equipment to various shocked Figure 1 shows schematically equipment of electricel communications engineering which has a This equipment such as is conventional for example in mobile radio has flattened corners This flattening is so carried out that the flattened sides stand at right angles to the appropriate diagonals of a which can be imagined to be arranged to fit in the corners of the equipment Mounted o the flattened corners shock absorbers 2 of an elastic for of The shock absorbers are constructed like spheres and are also flattened on the side facing the This flattening is so carried out that the sphere diameter at right angles to the flattened is in alignment with the space diagonals of the appropriate imaginary As the part view the shock absorber 2 is connected to the This can be so effected that the connection is not for example in that the shock absorber is vulcanized directl onto the corner of the the shock absorbers 2 will preferably be so constructed that they can be releasably connected to the equipment For this purpose the shock absorber 2 has on its flattened side 3 metal part This metal part 5 provided with at least one threaded bore 9 or a threaded bolt means of which it can be bolted to the equipment The junction from the elastic part of the shock absorber 2 to the mentioned metal part is preferably effected as is shown at 10 in the part view The metal part of the shock absorber 2 is provided with flats 11 or key bores In this way a simple and satisfactory fastening of the shock absorbers is made In the case of the embodiment the shock absorber 2 is constructed as an exact part the diameter of the part sphere is given the reference The d of the flattened part of the shock absorber 2 should amount to approximately 50 of the sphere diameter The spring characteristic of the system is made independent of direction by the correct selection of the transition of the diameter The exact value is dependent upon the equipment in question and can be simply determined by The material of the shock absorber 2 is a suitable elastic The absorbing effect of the elastic material can be further increased in manner known per se by using Further it is possible to construct the shock absorber 2 of a plurality of layers as is indicated in the part view A at 6 and Then the outermost layer 7 is produced from a highly so that the elastic core of the absorber is This layer can also be constructed to provide a sliding An article of equipment communications engineering with a mass of 20 kg was subjected to fall tests according to VG 95 equipment class In accordance with the invention rubber spheres were mounted as shock absorbers to protect this The shock absorbers had a diameter of the diameter of the metal part amounted to The rubber material had a hardness of The results were as follows Corner height of shock acceleration shock duration 10 25 20 24 30 3 23 50 80 20 75 130 100 180 14 120 200 11 Edge height of fall shock acceleration shock duration 10 16 2 20 24 30 45 23 50 78 75 120 17 100 150 14 120 180 11 Surface height of fall shock acceleration shock 10 17 25 20 24 30 44 2 50 78 20 125 100 160 14 120 190 11 Equipment constructed in accordance with the present invention has shown in a series of tests that the loading in dependence on different fall heights is no longer at its greatest on impact of the equipment on one surface as in the case of the previously known Rather the result is that a uniform loading as indicated Figure independently of whether the equipment falls on an on a surface or on a With regard to the frame a weight reduction of is possible with the construction in accordance with the which is of particular advantage the case of mobile In this case the achievable shock absorptions in the case of shock loading are at least as great as in the case of the previously known constructions Moreover a substantially lower production cost results from the lower weight and the simple Shock protected device The invention relates to shock equipment in electrical communication If such equipment with its sensitive components is subjected to hard and mechanical then corresponding measures must be provided to protect it against fall and For this it is for from German Patent Specification 1 209 to use protective in which there is in each of the eight corners a rubber bearing for holding the freely swinging Insofar as the equipment must be accessible in the operational state and at the same time water tightness is the outer housing has been reduced to a frame construction with a similar shock absorber This facilitates the access to adjusting elements The disadvantage of this construction in addition to the additional weight and larger the increased mechanical in the case of such the absorption of shocks depends very heavily on the direction of the shock so for when the equipment falls on an outer surface the loading of the sensitive incorporated components is the The present invention is therefore seeks to provide a construction which avoids or reduces the said According to a first aspect of the there is provided a shock protected equipment unit comprising flattened corners whose surfaces are each perpendicular to equipment unit corners and on which are mounted sphere shaped shock absorbers of elastic the shock absorbers being flattened on the side adjacent element so as to mate with the flattened According to a second aspect of the invention its corners are flattened at right angles to the appropriate diagonals of an imaginary cuboid fitting in the corners of the equipment and are each connected to a shock absorber of elastic material the shock absorber being so flattened on the side facing the equipment that the spherical diameter at right angles to the flattened side is in alignment with the respective space diagonals of the The invention will now be described in greater by way of example with reference to the in Figure 1 is a perspective view of a piece of equipment protected in accordance with the inventio partial Figure 2 shows graphically the action of the piece of equipment to various shocked Figure 1 shows schematically equipment of electrical communications engineering which has a constructioi This equipment such as is conventional for example in mobile radio has flattened corners This flattening is so carried out that the flattened sides stand at right angles to the appropriate diagonals of a of the equipment 1 are appropriately suitably dime shock absorbers 2 of an elastic for of shock absorbers are constructed like spheres and are also flattened on the side facing the This flattening is so carried out that the sphere diameter at right angles to the flattened is in alignment with the space diagonals of the appropriate imaginary As the part view the shock absorber 2 is connected to the This can be so effected that the connection is not for example in that the shock absorber is vulcanized directly onto the corner of the the shock absorbers 2 will preferably be so constructed that they can be releasably connected to the equipment For this purpose the shock absorber 2 has on its flattened side a metal part This metal part provided with at least one threaded bore 9 a threaded bolt means of which it can be bolted to the equipment The junction from the elastic part of the shock absorber 2 to the mentioned metal part preferably effected as is shown at 10 in the part view The metal part 5 of the shock absorber 2 is provided with flats 11 or key bores In this way a simple and satisfactory fastening of the shock absorbers is made In the case of the embodiment the shock absorber 2 is constructed as an the reference The diameter d of the flattened part 3 of the shock absorber 2 should to approximately 50 of the sphere diameter The spring characteristic of the system is made independent of direction by the correct selection of the transition of the diameter The exact value is dependent upon the in question and can be simply determined by The material of the shock absorber 2 is a suitable elastic The absorbing effect of the elastic material can be further increased in manner known per se by using Further it is possible to construct the shock absorber 2 of a plurality of layers as is indicated in the part view A at 6 and Then the outermost layer 7 is produced from a highly so that the elastic core of the shock absorber is This layer can also be constructed to provide a sliding An article of equipment communications engineering with a mass of 20 kg was to fall tests according to VG 95 equipment class In accordance the invention rubber spheres were mounted as shock absorbers to protect this The shock absorbers had a diameter of the diameter of the flattened metal part amounted to The rubber material had a hardness of 601 The results were as follows Corner height of fall shock acceleration shock duration 10 18 25 20 23 80 20 75 130 17 100 180 14 120 200 11 Edge height of fall shock acceleration shock duration 10 16 25 20 36 24 30 45 50 20 75 120 17 100 150 14 120 180 11 Surface height of fall shock acceleration shock 10 17 25 20 36 24 30 44 23 50 78 20 75 125 17 100 160 14 120 11 Equipment constructed in accordance with the present invention has shown in a series of tests that the loading in dependence on different fall heights is no longer at its the case of the previously known Rather the result is that a uniform loading as indicated Figure independently of whether the equipment falls on an on a surface or on a With regard to the frame a weight reduction of is possible with the construction in accordance with the which is of particular advantage in the case of mobile In this case the achievable shock absorptions in the case of shock loading are at least as great as in the case of the previously known Moreover a substantially lower production cost results from the weight and the simple insufficientOCRQuality

Claims (1)

WHAT WE CLAIM equipment electrical communications in that its corners flattened at right angles to the respective diagonals of an imaginary cuboid fitting in the corners of the equipment are each connected to a shock absorber of elastic and in that each shock absorber is so on the side facing the equipment that the sphere diameter lying at right angles to the flattened side is in alignment with the space diagonals of the respective An arrangement according to Claim wherein the flattening of the shock absorber is undertaken in such a manner that the diameter of its flattened side amounts to approximatel of the sphere An arrangement according to any one of the preceding wherein the shock absorbers are fixedly connected to the preferably by vulcanizing An arrangement according to Claim 1 or wherein the shock absorbers releasably connected to the equipment An arrangement according to Claim wherei the shock absorber is provided on its flattened side with a metal part for fastening An arrangement according to Claim 5 wherein the metal part has at least one threaded bore or a threaded bolt to the An arrangement accordin to Claim or wherein the transition from the elastic part of the shock absorber to metal part is made in a An arrangement according to Claim wherein the metal part of the shock absorber is provided with key flats or key An arrangement according to any one of the preceding wherein the shock absorber contains energy dissipating arrangement according to any one of the preceding wherein the shock absorber is constructed of layers of different An arrangement according to Claim wherein the outer layer comprises An arrangement according to Claim wherein the outer layer comprises material with good sliding A shock protected equipment unit comprising flattened corners whose surfaces are each perpendicular to a diagonal a cuboid fitting in the equipment unit corners and on which are mounted sphere shaped shock sbsorbers of elastic the the shock absorbers being flattened on the side adjacent the element so as to mate with the flattened A shock protected equipment unit substantially as described herein with reference to the WE CLAIM equipment for electrical communications characterized in its corners flattened at right angles to the respective diagonals of an imaginary cuboid fitting in the corners of the equipment are each connected to a shock absorber of elastic and in that each shock absorber is so on the side facing the equipment that the sphere diameter lying at right angles to the flattened side is in alignment with the space diagonals of the respective An arrangement according to Claim wherein the flattening of the shock absorber is undertaken in such a manner that the diameter of its flattened side amounts to approximately of the sphere An arrangement according to any one of the precedin wherein the shock absorbers are fixedly connected to the preferably by vulcanizing An arrangement according to

1. Claim 1 or wherein the shock absorbers are releasably connected to the An arrangement according to Claim wherein the shock absorber is provided on its flattened side with a metal part fastening An arrangement according to Claim wherein the metal part has at least one threaded bore or a threaded bolt to the An arrangement according to Claim or wherein the transition from the elastic part of the shock absorber to metal part is made in a An arrangement according to Claim or the metal part of the absorber is provided with key flats or key An arrangement according to any one of the preceding wherein the shock absorber contains energy dissipating arrangement according to any one of the preceding wherein the shock absorber is constructed of layers of different i An arrangement according to Claim wherein the outer layer comprises An arrangement according to Claim wherein the outer layer comprises material with good sliding properties A shock protected equipment unit comprising flattened corners whose surfaces are each perpendicular to a diagonal of a notional cuboid fitting in the equipment unit corners and on which are mounted sphere shaped shock absorbers of elastic the the shock absorbers being flattened on the side adjacent the element so as to mate with the flattened A shock protected equipment unit substantially as described herein with reference to the A v i v r y s ί r A i c insufficientOCRQuality