JP2009187614A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of efficiently absorbing large impact energy at low cost. <P>SOLUTION: A resilient member 22 is curved and extended between a first contact surface 23 brought into contact with a housing 12 and a second contact surface 24 brought into contact with an accommodation unit 17. As the first contact surface 23 and the second contact surface 24 approach to each other, the curvature of the resilient member 22 increases. When external impact is applied to the housing 12, the resilient member 22 absorbs the impact energy. At the initial stage of absorbing the impact, because the curvature is small, the resilient member 22 is hardly deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, the spring constant is gradually reduced with the increase of the curvature. A soft spring is achieved by the resilient member. In contrast to a linear spring and a hard spring, the impact force transferred to the accommodation unit 17 is reduced. Even when a gap between the housing 12 and the accommodation unit 17 is narrow, the impact energy is efficiently absorbed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to, for example, a portable electronic device including a housing that houses a housing unit such as a hard disk drive (HDD).

For example, as disclosed in Patent Document 1, an HDD is incorporated in a housing of an electronic device. A buffer member is disposed between the inner wall surface of the housing and the outer wall surface of the HDD. Each buffer member includes a buffer base material portion and a buffer flexible portion integrated with the buffer base material portion. The buffer base portion is formed of a material harder than the buffer flexible portion. When an impact is applied to the housing from the outside, the buffer base material portion first buckles. As a result, the initial impact is absorbed based on buckling. Thereafter, the remaining impact is absorbed based on the elastic deformation of the buffer flexible portion.
JP 2004-315087 A JP 2002-358140 A JP 2004-139670 A

  The buffer member described in Patent Document 1 stands upright from the inner wall surface of the housing and the outer wall surface of the HDD. Therefore, the buffer base material portion functions as a stick when the buffer base material is buckled. In other words, the shock until buckling cannot be absorbed by the buffer base material portion. Such an impact is applied to the HDD. There is a concern about HDD damage. And since a buffer member is comprised from two members, cost increases in manufacture.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an electronic device that can efficiently absorb large impact energy at low cost.

  In order to achieve the above object, according to the first invention, a housing, a housing unit accommodated in the housing, a first contact surface that contacts the housing, and a second contact surface that contacts the housing unit And an elastic member that extends while being curved, and the curvature of the elastic member increases as the first contact surface and the second contact surface approach each other.

  In such an electronic device, when a large impact is applied to the housing from the outside, the elastic member absorbs the impact energy. At this time, since the curvature of the elastic member is small at the initial stage of shock absorption, the elastic member is not easily deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, the curvature of the elastic member increases. The spring constant gradually decreases. A soft spring is thus realized. According to such a soft spring, compared with a linear spring and a rigid spring, the impact force transmitted to the accommodation unit is reduced. Even if the distance between the housing and the housing unit is narrow, the impact energy is efficiently absorbed.

  The first contact surface and the second contact surface extend in parallel with each other, and the centroid of the first contact surface and the centroid of the second contact surface are arranged on a straight line orthogonal to the first contact surface and the second contact surface. Is done. At this time, the elastic member is formed symmetrically with respect to a virtual plane located equidistant from the first contact surface and the second contact surface. In such an electronic device, as the first contact surface and the second contact surface approach each other, an intersection of the straight lines with respect to the virtual plane, and a centroid of a cross section of the elastic member defined in the virtual plane, The distance of increases. The elastic member is formed of a single-material molded product. As a result, the elastic member is manufactured at a low cost. The first contact surface and the second contact surface of the elastic member are fixed to the housing and the accommodation unit, respectively.

  According to the second aspect of the invention, the housing, the housing unit accommodated in the housing, and the first contact surface that contacts either the housing or the housing unit are curved and extend to the second contact surface. And an elastic member that contacts the other of the housing and the housing unit at an action point established between the first contact surface and the second contact surface, and either the housing or the housing unit is There is provided an electronic apparatus characterized in that the curvature of the elastic member decreases as approaching the other.

  In such an electronic device, as described above, when a large impact is applied to the housing from the outside, the elastic member absorbs the impact energy. At this time, since the curvature of the elastic member is small at the initial stage of shock absorption, the elastic member is not easily deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, the curvature of the elastic member increases. The spring constant gradually decreases. A soft spring is thus realized. According to such a soft spring, compared with a linear spring and a rigid spring, the impact force transmitted to the accommodation unit is reduced. Even if the distance between the housing and the housing unit is narrow, the impact energy is efficiently absorbed.

  The elastic member is formed in plane symmetry with respect to a virtual plane located at an equal distance from the centroid of the first contact surface and the centroid of the second contact surface. At this time, the elastic member is formed of a single-material molded product. The first contact surface of the elastic member is fixed to the one, and the second contact surface of the elastic member is slidably received by the one.

  According to the third aspect of the present invention, the dish, the housing unit accommodated in the housing, and the dish that is received by either the housing or the housing unit and tapers toward the other of the housing or the housing unit. An electronic device comprising a spring-shaped elastic member is provided. At this time, the elastic member is formed of a single-material molded product.

  In such an electronic device, as described above, when a large impact is applied to the housing from the outside, the elastic member absorbs the impact energy. At this time, the elastic member maintains a disc spring shape in the initial stage of shock absorption. The elastic member is not easily deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, the elastic member buckles. The spring constant gradually decreases. A soft spring is thus realized. According to such a soft spring, compared with a linear spring and a rigid spring, the impact force transmitted to the accommodation unit is reduced. Even if the distance between the housing and the housing unit is narrow, the impact energy is efficiently absorbed.

  According to the fourth aspect of the present invention, the pair of the housing, the housing unit accommodated in the housing, and the one of the housing and the housing unit that are fixed to any one of the housing and the housing unit and stand upright from the one surface while being separated at a predetermined interval. An elastic support member, a pair of receiving pieces connected to each elastic support member and extending in a direction approaching each other from the elastic support member, and the other of the case and the accommodation unit, and the case and the accommodation unit And a pressing member that is received by the receiving piece when they approach each other, and an elastic member that is sandwiched between the housing and the housing unit and elastically deforms when the housing and the housing unit approach each other. If the pressing force applied to the receiving piece from the pressing member exceeds the predetermined value when the housing units approach each other, the elastic supporting member is buckled and the pressing member is detached from the receiving piece. The electronic device is provided, characterized in that.

  In such an electronic device, when an impact is applied from the outside, the pressing member is received by the receiving piece. Thus, a large impact energy is absorbed in the initial stage of impact absorption. When the pressing force of the pressing member exceeds a predetermined value, the pressing member is allowed to move based on the buckling of the elastic support member. Thus, the remaining impact energy is absorbed by the elastic member. As a result, a soft spring is established by the elastic member, the pressing member, the elastic support member, and the receiving piece. As a result, the impact force transmitted to the housing unit is reduced compared to a linear spring or a rigid spring. Even if the distance between the housing and the housing unit is narrow, the impact energy is efficiently absorbed.

  In such an electronic device, the receiving piece is connected to the elastic support member so as to be swingable about a swing axis defined in a plane orthogonal to the moving direction of the pressing member, and the housing and the accommodation unit are When the pressing member is received by the receiving piece when approaching each other, the swinging of the receiving piece in the first direction around the swinging shaft is restricted, and the pressing member is moved when the housing and the housing unit are separated from each other. When contacting the receiving piece, the receiving piece may be allowed to swing in the second direction opposite to the first direction around the swing axis. The elastic support member, the receiving piece, and the pressing member may be integrated.

  As described above, according to the present invention, it is possible to provide an electronic device that can efficiently absorb large impact energy at low cost.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an appearance of an electronic apparatus, that is, a portable music player 11 according to an embodiment of the present invention. The music player 11 includes a housing 12 that houses a storage unit to be described later. A display panel 13 and an operation piece 14 are incorporated in the housing 12. The display panel 13 displays, for example, the song number of the recorded music and other information. The user can store music in the music player 11 based on the operation of the operation piece 14. The user can select music based on the operation of the operation piece 14.

  FIG. 2 schematically shows the structure of the music player 11 according to the first embodiment of the present invention. The housing 12 includes, for example, a base 15 that defines a rectangular parallelepiped internal space, that is, an accommodation space, and a cover 16 that is coupled to an opening of the base 15. When the cover 16 is coupled to the opening of the base 15, the housing space of the housing 12 is sealed. In the housing space of the housing 12, a rectangular parallelepiped housing unit, that is, a hard disk drive (HDD) 17 is housed. A magnetic disk is accommodated in the HDD 17. The rotation axis of the magnetic disk is defined in a direction orthogonal to the bottom plate of the base 15 and the cover 16.

  A connector 18 is connected to a connector (not shown) of the HDD 17. One end of a flexible printed circuit board 19 is connected to the connector 18. A connector (not shown) is connected to the other end of the flexible printed circuit board 19. The connector is connected to a connector on a mother board (not shown) housed in the housing 12. Thus, power is supplied to the HDD 17 from the motherboard. The HDD 17 is driven based on the supply of power.

  When the HDD 17 is accommodated in the accommodation space, each side surface of the HDD 17 faces the inner wall surface of the base 15. For example, a rectangular parallelepiped first elastic member 21 is sandwiched between each side surface of the HDD 17 and the inner wall surface of the base 15. One end surface of the first elastic member 21 is fixed to each side surface of the HDD 17 with, for example, an adhesive. The other end surface of the first elastic member 21 is received by the inner wall surface of the base 15. The other end surface of the first elastic member 21 is not fixed to the base 15. The first elastic member 21 is formed of a relatively soft single-material elastic molded product. The first elastic member 21 can absorb an impact acting in a direction perpendicular to the rotation axis of the magnetic disk.

  The bottom surface of the HDD 17 faces the bottom plate of the base 15. The upper surface of the HDD 17 faces the cover 16. Referring also to FIG. 3, a plurality of second elastic members 22 are sandwiched between the bottom surface of the HDD 17 and the bottom plate of the base 15. Similarly, a plurality of second elastic members 22 are sandwiched between the upper surface of the HDD 17 and the cover 16. The second elastic member 22 may be disposed adjacent to the four corners on the top and bottom surfaces of the HDD 17. Thus, different elastic members are arranged in the HDD 17 according to the direction of the rotation axis of the magnetic disk.

  The second elastic member 22 contacts the base 15 and the cover 16 at the first contact surface 23. Similarly, the second elastic member 22 contacts the HDD 17 at the second contact surface 24. The first contact surface 23 and the second contact surface 24 extend parallel to each other. For example, the second elastic member 22 may extend between the first contact surface 23 and the second contact surface 24 while being curved along an arc. The arc is defined by the centroid of each cross section of the second elastic member 22 parallel to the first contact surface 23 and the second contact surface 24.

  The second elastic member 22 is fixed to the base 15 and the cover 16 at the first contact surface 23. The second elastic member 22 is fixed to the HDD 17 at the second contact surface 24. For example, an adhesive may be used for fixing. The second elastic member 22 is composed of a molded product of a single material elastic body. Examples of the elastic body include gel made of thermoplastic resin and rubber made of thermosetting resin.

  As shown in FIG. 4, in the second elastic member 22, the centroid G 1 of the first contact surface 23 and the centroid G 2 of the second contact surface 24 are orthogonal to the first contact surface 23 and the second contact surface 24. It is arranged on one straight line L. A straight line L is defined parallel to the rotation axis of the magnetic disk. On the other hand, the second elastic member 22 is formed symmetrically with respect to a virtual plane P located at an equal distance from the first contact surface 23 and the second contact surface 24. The virtual plane P extends in parallel to the bottom plate of the base 15, the cover 16, and the top and bottom surfaces of the HDD 17. The straight line L intersects the virtual plane P at the intersection N. In the virtual plane P, a centroid G3 of a cross section of the second elastic member 22 is defined.

  The second elastic member 22 increases the curvature as the first contact surface 23 and the second contact surface 24 approach each other. Thus, a non-linear spring, that is, a soft spring is established in the second elastic member 22. As shown in FIG. 5, when the deformation amount, that is, the stroke is constant, the soft spring can absorb the impact most than the hard spring or the linear spring. In the initial stage of shock absorption, the second elastic member 22 is not easily deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, the spring constant gradually decreases as the impact is absorbed.

  Now, for example, it is assumed that a large impact is applied to the music player 11 from the outside due to a fall. As shown in FIG. 6, for example, when the impact load F acts on the music player 11 in a direction orthogonal to the surface of the cover 16, that is, in a direction parallel to the rotation axis of the magnetic disk, the cover 16 and the HDD 17 approach each other. A compressive force C that causes the first contact surface 23 and the second contact surface 24 to approach each other begins to be applied to the second elastic member 22. Simultaneously with the action of the compressive force C, a bending stress is established in the second elastic member 22. When the bending stress is established, the second elastic member 22 is elastically deformed from the original shape.

  Since the curvature of the second elastic member 22 is small at the initial stage of shock absorption, the second elastic member 22 tends to be deformed. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, as shown in FIG. 7, the curvature of the second elastic member 22 increases as the deformation amount of the second elastic member 22 increases. The distance between the intersection point P and the centroid G3 increases. The spring constant gradually decreases. Thus, the second elastic member 22 absorbs the remaining impact energy. Thereafter, the HDD 17 and the cover 16 are separated from each other by the reaction of the impact. The second elastic member 22 returns to the original shape based on the elastic restoring force.

  In the music player 11 as described above, since the second elastic member 22 extends while being curved between the first contact surface 23 and the second contact surface 24, the second elastic member 22 is elastically deformed relatively easily. start. However, since the curvature of the second elastic member 22 is small at the initial stage of shock absorption, large shock energy is absorbed. Thereafter, as the curvature increases, the second elastic member 22 absorbs impact energy. Thus, since the soft spring is established by the second elastic member 22, the impact force transmitted to the HDD 17 is reduced as compared with the linear spring or the hard spring. Even if the distance between the housing 12 and the HDD 17 is narrow, the impact energy is efficiently absorbed. Moreover, since the second elastic member 22 is formed of a single-material molded product, it is manufactured at a low cost.

  FIG. 8 schematically shows the structure of a music player 11a according to the second embodiment of the present invention. Instead of the second elastic member 22, a second elastic member 22a is incorporated in the music player 11a. The second elastic member 22 a extends from the first contact surface 23 that contacts the HDD 17 while being curved, for example, along an arc, and contacts the HDD 17 at the second contact surface 24. The first contact surface 23 and the second contact surface 24 extend in the same virtual plane. The second elastic member 22a is fixed to the HDD 17 with the first contact surface 23 based on, for example, an adhesive. The second contact surface 24 is not fixed to the HDD 17. As a result, the second contact surface 24 is slidably received by the HDD 17.

  As shown in FIG. 9, the second elastic member 22 a comes into contact with the base 15 and the cover 16 at an action point A established between the first contact surface 23 and the second contact surface 24. The second elastic member 22a is formed in plane symmetry with respect to a virtual plane P located at an equal distance from the centroid G1 of the first contact surface 23 and the centroid G2 of the second contact surface 24. The action point A is defined in a virtual plane. The second elastic member 22a is formed of a single-material molded product similar to the second elastic member 22 described above. The characteristics of the soft spring are established in the second elastic member 22a. In addition, the same reference numerals are assigned to the same configurations and structures as those of the music player 11 described above.

  Now, for example, a scene in which a large impact is applied to the music player 11a from the outside due to a fall is assumed. When an impact load F is applied to the music player 11a in a direction parallel to the rotation axis of the magnetic disk, the cover 16 and the HDD 17 approach each other. A crushing force C that causes the action point A to approach the HDD 17 starts to be applied. Simultaneously with the action of the crushing force C, a bending stress is established in the second elastic member 22a. When the bending stress is established, the second elastic member 22a is elastically deformed from the original shape. The second contact surface 24 of the second elastic member 22 a slides on the HDD 17.

  Since the curvature of the second elastic member 22a is small at the initial stage of shock absorption, the second elastic member 22a tends to deform. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, as shown in FIG. 10, the second contact surface 24 slides on the HDD 17 as the deformation amount of the second elastic member 22 a increases. The curvature of the second elastic member 22a increases. The spring constant gradually decreases. Thus, the second elastic member 22a absorbs the remaining impact energy. Thereafter, the HDD 17 and the cover 16 are separated from each other by the reaction of the impact. The second elastic member 22a returns to the original shape based on the elastic restoring force.

  In the music player 11a as described above, since the second elastic member 22a extends while being curved between the first contact surface 23 and the second contact surface 24, the second elastic member 22a is elastically deformed relatively easily. start. However, since the curvature of the second elastic member 22a is small at the initial stage of impact absorption, large impact energy is absorbed. Thereafter, as the curvature increases, the second elastic member 22a absorbs the remaining impact energy. Thus, since the soft spring is established by the second elastic member 22a, the impact force transmitted to the HDD 17 is reduced as compared with the linear spring or the hard spring. Even if the distance between the housing 12 and the HDD 17 is narrow, the impact energy is efficiently absorbed. In addition, since the second elastic member 22a is formed of a single-material molded product, it is manufactured at a low cost.

  FIG. 11 schematically shows the structure of a music player 11b according to the third embodiment of the present invention. The music player 11b incorporates a second elastic member 22b instead of the second elastic members 22 and 22a. The second elastic member 22b has a disc spring shape. The second elastic member 22b defines a frustoconical outline. In the second elastic member 22b, a space penetrating from the upper end to the lower end is defined. The second elastic member 22b is formed of a molded product of a single material elastic body. As described above, the elastic body includes, for example, a gel made of a thermoplastic resin and a rubber made of a thermosetting resin. The characteristics of the soft spring are established in the second elastic member 22b.

  Referring also to FIG. 12, the second elastic member 22 b is fixed to the upper surface and the bottom surface of the HDD 17 with an annular first contact surface 23. An adhesive is used for fixing. The second elastic member 22 b tapers from the HDD 17 toward the base 15 or the cover 16. The second elastic member 22 b is received by the base 15 and the cover 16 by the annular second contact surface 24. The second contact surface 24 of the second elastic member 22 b is not fixed to the base 15 or the cover 16. The first contact surface 23 and the second contact surface 24 extend parallel to each other. In addition, the same reference numerals are assigned to configurations and structures equivalent to those of the second elastic members 22 and 22a.

  Now, for example, it is assumed that a large impact is applied to the music player 11b from the outside due to falling. When an impact load F acts on the music player 11b in a direction parallel to the rotation axis of the magnetic disk, a crushing force C that causes the cover 16 to approach the HDD 17 starts to be applied. Simultaneously with the action of the crushing force C, a bending stress is established by the second elastic member 22b. When the bending stress is established, the second elastic member 22b is elastically deformed from the original shape.

  Since the second elastic member 22b has a disc spring shape, the second elastic member 22b tends to be deformed at the initial stage of shock absorption. A large spring constant is secured. Large impact energy is absorbed per unit stroke. Thereafter, as shown in FIG. 13, buckling is caused in the second elastic member 22b. The second elastic member 22b is curved while bulging outward. The spring constant gradually decreases. Thus, the second elastic member 22b absorbs the remaining impact energy. Thereafter, the HDD 17 and the cover 16 are separated from each other by the reaction of the impact. Thus, the second elastic member 22b returns to the original shape based on the elastic restoring force.

  In the music player 11b as described above, since the second elastic member 22b has a disc spring shape, large impact energy is absorbed in the initial stage of impact absorption. Thereafter, buckling is caused in the second elastic member 22b. Thereafter, as the curvature increases, the second elastic member 22b absorbs the remaining impact energy. Thus, since the soft spring is established by the second elastic member 22b, the impact force transmitted to the HDD 17 is reduced as compared with the linear spring or the hard spring. Even if the distance between the housing 12 and the HDD 17 is narrow, the impact energy is efficiently absorbed. Moreover, since the second elastic member 22b is formed from a single-material molded product, it is manufactured at a low cost.

  In the music players 11, 11a, and 11b as described above, the first elastic member 21 may be configured in the same manner as the above-described second elastic members 22, 22a, and 22b. In addition, the first contact surface 23 and the second contact surface 24 of the second elastic member 22 a may be received by the base 15 or the cover 16. The first contact surface 23 of the second elastic member 22 a is fixed to the base 15 and the cover 16. The second elastic member 22a may be in contact with the HDD 17 at the point of action A. Similarly, the second elastic member 22 b may be received by the base 15 or the cover 16 at the first contact surface 23. At this time, the first contact surface 23 of the second elastic member 22 b may be fixed to the base 15 or the cover 16.

  FIG. 14 schematically shows the structure of a music player 11c according to the fourth embodiment of the present invention. In the music player 11 c, for example, a rectangular parallelepiped elastic member 31 is sandwiched between the HDD 17 and the base 15 or the cover 16. The elastic members 31 are arranged at the four corners on the top and bottom surfaces of the HDD 17. The elastic member 31 is fixed to the HDD 17 at one end surface. An adhesive may be used for fixing. The other end surface of the elastic member 31 is received by the base 15 and the cover 16. The other end surface of the elastic member 31 is not fixed to the base 15 or the cover 16.

  Similar to the first elastic member 21 described above, the elastic member 31 is formed of a relatively soft single-material elastic molded product. The resonance frequency of the elastic member 31 and the first elastic member 21 is relatively small. On the other hand, the resonance frequency of the vibration of the HDD 17 is relatively high. As a result, even if the HDD 17 vibrates when a relatively small impact is applied to the music player 11c, for example, the elastic member 31 and the first elastic member 21 can effectively absorb the vibration of the HDD 17. Thus, the vibration of the HDD 17 is effectively suppressed.

  A pressing member 32 is connected to the HDD 17 adjacent to each elastic member 31. Referring also to FIG. 15, the pressing member 32 includes, for example, a columnar main body 33 that stands upright from the top and bottom surfaces of the HDD 17, and a flange 34 that is integrated with the tip of the main body 33. The pressing member 32 is fixed to the HDD 17 based on, for example, an adhesive at the base end of the main body 33. The flange 34 has a diameter larger than the diameter of the main body 33. Such a pressing member 32 may be formed from, for example, plastic or metal material.

  A pair of elastic support members 35, 35 are associated with each pressing member 32. The elastic support member 35 stands upright from the surface of the bottom plate of the base 15 and the inward surface of the cover 16 while being separated at a predetermined interval. The elastic support member 35 is formed of an elastic body harder than rubber, for example. Thus, the elastic support member 35 allows elastic deformation. A receiving piece 36 is connected to the tip of each elastic support member 35 so as to be swingable about a predetermined swing axis X. The pair of receiving pieces 36, 36 protrude from the elastic support members 35, 35 in a direction approaching each other. The receiving piece 36 is formed from, for example, a plastic resin or a metal material. A predetermined gap is defined between the flange 34 of the pressing member 32 and the receiving pieces 36 and 36.

  The swing axis X is defined in a plane perpendicular to the axial direction of the pressing member 32. When the receiving piece 36 is positioned at the reference position, the receiving piece 36 maintains a horizontal posture. In the horizontal posture, the swing of the receiving piece 36 around the swing axis X in the first direction D1 is restricted. On the other hand, the receiving piece 36 is allowed to swing from the horizontal posture around the swing axis X in the second direction D2 opposite to the first direction D1. The swinging range of the receiving piece 36 is set to a predetermined range. That is, the receiving piece 36 can swing to a swing position described later. Thus, the receiving piece 36 can swing in the first direction D1 and the second direction D2 within a predetermined swing range.

  Now, when an impact load F is applied to the music player 11c in a direction parallel to the rotation axis of the magnetic disk, the base 15 and the cover 16 and the HDD 17 approach each other. A crushing force starts to be applied to the elastic member 31. The elastic member 31 is crushed. At the same time, as shown in FIG. 16, the pressing member 32 moves along its axis. The pressing member 32 contacts the pair of receiving pieces 36 at the flange 34. Since the swing of the receiving piece 36 is restricted in the first direction D1 at the reference position, the receiving pieces 36 and 36 receive the pressing member 32. The pressing member 32 is pressed against the receiving pieces 36 and 36 with a predetermined pressing force. As a result, large impact energy is absorbed in the initial stage of impact absorption.

  If the pressing force applied to the receiving piece 36 from the pressing member 32 exceeds a predetermined value, the elastic support members 35 and 35 are buckled based on the pressing force of the pressing member 32 as shown in FIG. The receiving pieces 36 are separated from each other. The pressing member 32 is detached from the receiving pieces 36 and 36. The pressing member 32 is allowed to move along the axis. The elastic member 31 is further crushed. As a result, as shown in FIG. 18, the flange 34 of the pressing member 32 is closer to the HDD 17 than the receiving pieces 36 and 36. Thus, the elastic member 31 can absorb the remaining impact energy. Thereafter, the buckling of the elastic support member 35 is canceled based on the reaction. The receiving pieces 36 and 36 return to the reference position.

  The HDD 17 and the base 15 and cover 16 are separated from each other by the reaction of the impact. The pressing member 32 moves in the opposite direction along the axis. As shown in FIG. 19, the flange 34 of the pressing member 32 contacts the receiving pieces 36 and 36. As a result, the receiving piece 36 swings around the swing axis X in the second direction D2 toward the swing position. The pressing member 32 is allowed to move along the axis. When the flange 34 of the pressing member 32 moves further away from the base 15 than the receiving pieces 36, 36, the receiving pieces 36, 36 swing around the swing axis X in the first direction D1 based on the reaction. The receiving pieces 36 and 36 return to the reference position.

  In the music player 11c as described above, when the impact load F starts to be applied, the pressing member 32 is received by the receiving pieces 36, 36. The swinging of the receiving piece 36 is restricted. Thus, a large impact energy is absorbed in the initial stage of impact absorption. When the pressing force of the pressing member 32 exceeds a predetermined value, the pressing member 32 is allowed to move based on the buckling of the elastic support member 35. Thus, the remaining impact energy is absorbed by the elastic member 31. As a result, a soft spring is established by the elastic member 31, the pressing member 32, the elastic support member 35 and the receiving piece 36. As a result, the impact force transmitted to the HDD 17 is reduced compared to a linear spring or a rigid spring. Even if the distance between the housing 12 and the HDD 17 is narrow, the impact energy is efficiently absorbed.

  As shown in FIG. 20, in the music player 11c, the pressing member 32, the elastic support member 35, and the receiving piece 36 described above may be integrally formed from a relatively hard elastic body. The pressing member 32 and the elastic support member 35 may be connected to each other by a connecting piece 37. The connecting piece 37 is integrated with the pressing member 32 and the elastic support member 35. A notch 38 is formed between the elastic support member 35 and the receiving piece 36 along a plane orthogonal to the axial direction of the pressing member 32. The receiving piece 36 can swing within a predetermined swing range by the action of the cut 38. Like reference numerals are attached to the structure or components equivalent to those described above.

  Now, when an impact load F is applied to the music player 11c in a direction parallel to the rotation axis of the magnetic disk, the pressing member 32 moves along the axis as shown in FIG. Even if the flange 34 of the pressing member 32 contacts the receiving pieces 36, 36, the swinging of the receiving piece 36 in the first direction D1 around the swing axis X is restricted as described above. When the pressing force applied from the pressing member 32 to the receiving pieces 36, 36 exceeds a predetermined value, the elastic support members 35, 35 are buckled as shown in FIG. The flange 34 of the pressing member 32 is detached from the receiving pieces 36 and 36. The pressing member 32 moves along the axis. The flange 34 is closer to the base 15 and the cover 16 than the receiving pieces 36, 36.

  Thereafter, the receiving pieces 36 and 36 return to the reference position by reaction. The pressing member 32 moves in the opposite direction along the axis. As a result, as shown in FIG. 23, the flange 34 of the pressing member 32 contacts the receiving pieces 36 and 36. As shown in FIG. 24, the receiving piece 36 swings around the swing axis X in the second direction D2. The receiving piece 36 is positioned at the swing position. The pressing member 32 is detached from the receiving pieces 36 and 36. The flange 34 is further away from the base 15 and the cover 16 than the receiving pieces 36 and 36. Since the swinging range of the receiving pieces 36, 36 is set to a predetermined range, the receiving piece 36 swings around the swinging axis X in the first direction D1. The receiving piece 36 returns to the reference position. In this way, the same effect as described above is realized.

  (Additional remark 1) The housing | casing, the storage unit accommodated in a housing | casing, the 1st contact surface which contacts a housing | casing, and the elastic member extended while curving between the 2nd contact surface which contacts a storage unit The electronic device is characterized in that the curvature of the elastic member increases as the first contact surface and the second contact surface approach each other.

  (Appendix 2) In the electronic device according to Appendix 1, the first contact surface and the second contact surface extend in parallel to each other, and the centroid of the first contact surface and the centroid of the second contact surface are the first contact surface. And an electronic device arranged on a straight line orthogonal to the second contact surface.

  (Additional remark 3) The electronic device of Additional remark 2 WHEREIN: The said elastic member is formed in plane symmetry with respect to the virtual plane located in the same distance from the said 1st contact surface and a 2nd contact surface, It is characterized by the above-mentioned. Electronics.

  (Supplementary note 4) In the electronic device according to supplementary note 3, as the first contact surface and the second contact surface approach each other, an intersection of the straight lines with respect to the virtual plane and the prescribed in the virtual plane An electronic apparatus characterized in that a distance from a centroid of a cross section of an elastic member increases.

  (Additional remark 5) The electronic device of Additional remark 4 WHEREIN: The said elastic member is comprised from the molded article of a single material, The electronic device characterized by the above-mentioned.

  (Additional remark 6) The electronic device of Additional remark 5 WHEREIN: The 1st contact surface and 2nd contact surface of the said elastic member are respectively fixed to a housing | casing and an accommodation unit, The electronic device characterized by the above-mentioned.

  (Supplementary note 7) The casing, the housing unit accommodated in the housing, and the first contact surface that contacts either the housing or the housing unit extend while curving and come into contact with the second contact surface. An elastic member that contacts either the housing or the housing unit at an action point established between the first contact surface and the second contact surface, and either the housing or the housing unit approaches the other The electronic device is characterized in that the curvature of the elastic member decreases with time.

  (Additional remark 8) In the electronic device of Additional remark 7, the said elastic member is formed in plane symmetry with respect to the virtual plane located in equidistant from the centroid of a said 1st contact surface, and the centroid of a 2nd contact surface. An electronic device characterized by that.

  (Additional remark 9) The electronic device of Additional remark 8 WHEREIN: The said elastic member is comprised from the molded article of a single material, The electronic device characterized by the above-mentioned.

  (Additional remark 10) The electronic device of Additional remark 7 WHEREIN: The 1st contact surface of the said elastic member is fixed to said one, The 2nd contact surface of the said elastic member is slidably received by said one, It is characterized by the above-mentioned. Electronics.

  (Supplementary Note 11) A disc spring-shaped member that is received by one of the housing, the housing unit housed in the housing, and the housing and the housing unit and tapers toward the other of the housing and the housing unit. An electronic device comprising an elastic member.

  (Additional remark 12) The electronic apparatus of Additional remark 11 WHEREIN: The said elastic member is comprised from the molded article of a single material, The electronic device characterized by the above-mentioned.

  (Supplementary Note 13) A pair of elastic support members that are fixed to one of the housing, the housing unit housed in the housing, and the housing and the housing unit, and stand upright from the one surface while being separated at a predetermined interval And a pair of receiving pieces that are connected to the respective elastic support members and extend in a direction approaching each other from the elastic support members, and are connected to the other of the housing and the housing unit so that the housing and the housing unit are mutually connected. The housing and the accommodation unit include a pressing member that is received by the receiving piece when approaching, and an elastic member that is sandwiched between the housing and the accommodation unit and elastically deforms when the housing and the accommodation unit approach each other. When the pressing force applied to the receiving piece from the pressing member exceeds a predetermined value when they approach each other, buckling of the elastic support member is caused and the pressing member is detached from the receiving piece. Electronic apparatus characterized.

  (Supplementary note 14) In the electronic device according to supplementary note 13, the receiving piece is coupled to the elastic support member so as to be swingable about a swing axis defined in a plane orthogonal to a moving direction of the pressing member, When the pressing member is received by the receiving piece when the housing and the housing unit approach each other, the swinging of the receiving piece in the first direction around the swinging shaft is restricted, and the housing and the housing unit are separated from each other. In this case, when the pressing member comes into contact with the receiving piece, the receiving piece is allowed to swing in the second direction opposite to the first direction around the swing axis.

  (Additional remark 15) The electronic device of Additional remark 13 WHEREIN: The said elastic support member, the said receiving piece, and the said pressing member are integrated, The electronic device characterized by the above-mentioned.

It is a perspective view which shows the external appearance of the electronic device which concerns on one Embodiment of this invention, ie, a portable music player. 1 is an exploded perspective view schematically showing a structure of a music player according to a first embodiment of the present invention. FIG. 3 is a vertical sectional view taken along line 3-3 in FIG. 1. It is a partial expanded sectional view which shows roughly the structure of the elastic member which concerns on one specific example. It is a graph which shows the relationship between the deformation amount of a spring, and an impact force. It is a partial expanded sectional view which shows a mode that an impact load acts on a housing | casing schematically. It is a partial expanded sectional view which shows a mode that an elastic member absorbs impact energy roughly. It is a vertical sectional view schematically showing the structure of a music player according to a second embodiment of the present invention. It is a partial expanded sectional view which shows a mode that an impact load acts on a housing | casing schematically. It is a partial expanded sectional view which shows a mode that an elastic member absorbs impact energy roughly. It is a perspective view which shows roughly the structure of the music player which concerns on 3rd Embodiment of this invention. It is a partial expanded sectional view which shows a mode that an impact load acts on a housing | casing schematically. It is a partial expanded sectional view which shows a mode that an elastic member absorbs impact energy roughly. It is a vertical sectional view showing roughly the structure of a music player according to a fourth embodiment of the present invention. It is a partial expanded sectional view which shows roughly the structure of an elastic support member, a receiving piece, and a pressing member. It is a partial expanded sectional view which shows a mode that an impact load acts on a housing | casing schematically. It is a partial expanded sectional view which shows a mode that a pressing member remove | deviates from a receiving piece based on the buckling of an elastic support member. It is a partial expanded sectional view which shows a mode that a receiving piece returns to a reference position based on cancellation of buckling of an elastic support member. It is a partial expanded sectional view which shows roughly a mode that a receiving piece rock | fluctuates in a 2nd direction based on a contact with a pressing member. It is a partial expanded sectional view which shows roughly the structure of the elastic member which concerns on one modification. It is a partial expanded sectional view which shows a mode that a pressing member contacts a receiving piece schematically. It is a partial expanded sectional view which shows a mode that a pressing member remove | deviates from a receiving piece based on the buckling of an elastic support member. It is a partial expanded sectional view which shows a mode that a pressing member contacts a receiving piece schematically. It is a partial expanded sectional view which shows roughly a mode that a receiving piece rock | fluctuates in a 2nd direction based on a contact with a pressing member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 Electronic device (music player), 12 Housing | casing, 17 Storage unit (hard disk drive device), 22 Elastic member, 23 1st contact surface, 24 2nd contact surface, 31 Elastic member, 32 Pressing member, 35 Elastic support member, 36 receiving piece, centroid of G1 first contact surface, centroid of G2 second contact surface, centroid of G3 cross section, L straight line, P virtual plane, N intersection, X swing axis, D1 first direction, D2 first Two directions.

Claims (9)

A housing,
A housing unit housed in a housing;
A first contact surface that contacts the housing, and an elastic member that extends while curving between the second contact surface that contacts the housing unit,
An electronic device, wherein the curvature of the elastic member increases as the first contact surface and the second contact surface approach each other.   2. The electronic device according to claim 1, wherein the first contact surface and the second contact surface extend in parallel with each other, and the centroid of the first contact surface and the centroid of the second contact surface are the first contact. An electronic device, wherein the electronic device is arranged on a straight line orthogonal to a surface and the second contact surface.   3. The electronic device according to claim 2, wherein the elastic member is formed in plane symmetry with respect to a virtual plane located at an equal distance from the first contact surface and the second contact surface. .   The electronic device according to claim 3, wherein as the first contact surface and the second contact surface approach each other, an intersection of the straight line with respect to the virtual plane and the elastic member defined in the virtual plane An electronic device characterized in that a distance from a centroid of a cross section increases.   The electronic device according to claim 4, wherein the elastic member is formed of a single-material molded product.   6. The electronic apparatus according to claim 5, wherein the first contact surface and the second contact surface of the elastic member are fixed to a housing and a housing unit, respectively. A housing,
A housing unit housed in a housing;
A point of action established between the first contact surface and the second contact surface that extends while curving from the first contact surface that contacts either the housing or the housing unit and contacts the second contact surface with the second contact surface. And an elastic member in contact with either the housing or the housing unit,
An electronic device characterized in that the curvature of the elastic member decreases as one of the housing and the housing unit approaches the other. A housing,
A housing unit housed in a housing;
An electronic device comprising: a disc spring-shaped elastic member that is received by one of the housing and the housing unit and extends while tapering toward the other of the housing and the housing unit. A housing,
A housing unit housed in a housing;
A pair of elastic support members fixed to one of the housing and the housing unit and standing upright from the one surface while being separated at a predetermined interval;
A pair of receiving pieces coupled to the individual elastic support members and extending from the elastic support members toward each other;
A pressing member connected to the other of the housing and the housing unit and received by the receiving piece when the housing and the housing unit approach each other;
An elastic member sandwiched between the housing and the housing unit and elastically deformed when the housing and the housing unit approach each other;
When the casing and the housing unit approach each other, if the pressing force applied to the receiving piece from the pressing member exceeds a predetermined value, the elastic support member is buckled and the pressing member is detached from the receiving piece. Electronic equipment.

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