JP4439414B2 - Electronic component support member and electronic device - Google Patents

Description

  The present invention relates to an electronic component support member that is a shock absorber that supports an electronic component in a housing, and an electronic apparatus using the electronic component support member.

  Electronic equipment such as information processing equipment, measuring equipment, recording / playback equipment, and communication equipment is equipped with a shock absorber to protect the built-in unit, which is an electronic component, from impact caused by collision or dropping during transportation or handling. There are many cases (for example, refer to patent documents 1 to 4). Such a shock absorber is required to have a performance of reducing the vibration transmitted to the built-in unit at the same time as reducing the impact.

The above-described conventional buffer device for a typical electronic device is inserted between an inner wall of a storage unit provided in the housing and an electronic component disposed in the storage unit. The shock absorber mainly undergoes compressive deformation when receiving an impact, converts a part of the impact energy into the deformation energy and absorbs it inside, and also converts a part of the impact energy into heat by the damping property and consumes it. . Thereby, the impact given to an electronic component is relieved. The shock absorber is constituted by, for example, a member formed of a viscoelastic material such as rubber, or a combination of a spring and a damper.
JP 2001-345565 A JP 2002-358140 A Japanese Patent No. 34088771 Japanese Patent No. 2941050

  The conventional shock absorber described above can exhibit a shock absorbing effect when the impact force received by the electronic device is relatively small, but when the impact force is large, the shock absorber is formed of a viscoelastic material as the deformation of the shock absorber increases. The member or spring becomes hard and the impact energy that can be absorbed and consumed is saturated. As a result, a large impact force is transmitted to the built-in unit, which may cause damage.

  In addition, since the above-described conventional shock absorber extends from the outer wall of the built-in unit to the inner wall facing the outer wall of the storage portion, the boundary between the inner wall of the storage portion and the shock absorber is limited due to processing accuracy limitations and assembly errors. The condition and the boundary condition between the outer wall of the built-in unit and the shock absorber are likely to be unstable, and the shock absorbing performance may be reduced. As a result, for example, the rigidity of the shock absorber increases sharply during an impact, and the acceleration transmitted to the built-in unit may increase suddenly. In particular, when the built-in unit is in contact with the shock absorber at many locations, and the shock absorber is in contact with the inner wall of the storage unit at many locations, the above boundary condition is likely to be unstable, resulting in a reduction in shock absorbing performance. It's easy to do. This is not limited to the impact, and the same applies to the decrease in the vibration proof performance against vibration or residual vibration after impact.

  Furthermore, in the conventional shock absorber described above, the shock absorber, which absorbs and consumes impact energy, is in direct contact with the built-in unit at many places. There is a risk that the shock absorbing performance and vibration isolating performance of the device will deteriorate.

  Further, as another known example, there is a case in which the shock absorber having the above-described configuration is configured by a shock absorber that causes destruction or plastic deformation when an impact force of a certain level or more is applied (see, for example, Patent Documents 1 and 2). ). That is, it is a method of consuming impact energy by utilizing fracture or plastic deformation and reducing the impact force transmitted to the built-in unit.

  However, since the boundary condition between the inner wall of the storage unit and the shock absorber and the boundary condition between the outer wall of the built-in unit and the shock absorber may become unstable, the shock absorber may be destroyed or plastically deformed. It is difficult to accurately and stably manage the impact level and location where the damage occurs. Therefore, the shock absorber configured as described above has a higher probability of unstable performance compared to a member formed of a viscoelastic material or a combination of a spring and a damper, resulting in a decrease in shock absorbing performance. It's easy to do.

  In the method as described above, the shock absorber that absorbs and consumes the shock energy by deformation is disposed so as to contact both the built-in unit and the storage portion. Therefore, when the shock force is large, the shock absorber is greatly deformed. A member or spring made of a viscoelastic material becomes hard, and the impact energy that can be absorbed and consumed is saturated. As a result, a large impact force is transmitted to the built-in unit, which may cause damage.

  In addition, the boundary condition between the storage unit and the shock absorber and the boundary condition between the built-in unit and the shock absorber are likely to be unstable, and the shock absorbing performance may be reduced. Furthermore, the heat generated in the built-in unit is transmitted to the shock absorber, the characteristics of the shock absorber are easily changed, and the shock absorbing performance may be reduced.

  An object of this invention is to solve the above-mentioned subject and to provide the electronic component support member from which the stable high buffer performance is obtained, and an electronic device using the same.

In order to solve the above problems, in the present invention, in an electronic component support member that supports a corner portion where two sides of an electronic component intersect in the housing, the two sides of the corner portion of the electronic component are fixed to the housing. An L-shaped first fixing portion extending in parallel with the first fixing portion; a second fixing portion fixed to the electronic component at a position opposite to the first fixing portion; and fixing to the first fixing portion A first plate that is connected and extends in a planar shape from each side of the L-shaped first fixing portion without contacting any of the housing and the electronic component, and has a bent L-shaped section. A curved portion of the first curved portion, and the first curved portion and the second fixed portion are fixedly connected to each other and do not come into contact with either the casing or the electronic component and are perpendicular to each surface of the first curved portion. and a second curved portion which forms a flat, and is formed by a viscoelastic material, said first bay Characterized in that it is configured to be able to absorb the impact by parts and bending deformation of the second curved portion.

Furthermore, according to the present invention, in the electronic device having a housing, an electronic component, and a plurality of electronic component support members that support corners where two sides of the electronic component intersect in the housing, the electronic component support The member is formed of a viscoelastic material, is fixed to the housing, and extends in parallel with two sides of the corner of the electronic component, and is opposite to the first fixing portion. A second fixing portion fixed to the electronic component at a position on the side, and fixedly connected to the first fixing portion, and the L-shaped first without contacting either the housing or the electronic component a first curved portion cross from each of the sides of the fixed portion extends in a planar shape is L-shaped with bent plate, it is fixedly connected to the first curved portion and the second fixing portion, said on each side of the first bending section without contacting any of the housing and the electronic component And a second curved portion forming a straight flat plate, and is characterized by being configured to absorb the shock by bending deformation of the first curved portion and the second curved portion.

  According to the present invention, even when the impact force is large and the deformation of the shock absorber is large, the portion related to the shock absorbing performance of the shock absorber does not become hard, and the shock energy that can be absorbed and consumed is not saturated. As a result, the built-in unit can be protected from a large impact force. Further, there is no possibility that the boundary condition between the storage unit and the shock absorber and the boundary condition between the built-in unit and the shock absorber are unstable. Furthermore, the heat generated by the built-in unit is transmitted to the shock absorber, and the shock absorbing performance of the shock absorber is not lowered. As a result, it is possible to realize an electronic component support member that can obtain a stable and high buffer performance and an electronic device using the same.

  Hereinafter, various embodiments of an electronic device including an electronic component support member (buffer device) according to the present invention will be described with reference to the drawings. Here, the same or similar parts are denoted by common reference numerals, and redundant description is omitted.

  1 to 3 show a main part of an embodiment of an electronic apparatus according to the present invention. That is, FIG. 1 is a principal sectional view showing an embodiment of an electronic device including a shock absorber, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. It is a typical sectional elevation shown.

  A built-in unit (electronic component) 2 such as a disk drive device is housed in a housing 4 of a housing 1 of an electronic device such as a portable electronic computer, and the built-in unit 2 is held by a buffer device 3. In the illustrated example, the built-in unit 2 is a rectangular parallelepiped, and the storage portion 4 is a rectangular parallelepiped that is slightly larger than the built-in unit 2. The shock absorber 3 is attached to the four corners of the ceiling surface 30 of the storage unit 4 and supports the four corners of the bottom surface of the built-in unit 2.

  The shock absorber 3 is formed of, for example, a viscoelastic material such as rubber, and includes a first fixing portion 5 that is fixed to the ceiling surface 30 of the storage portion 4, and a second fixing portion 6 that is fixed to the bottom surface of the built-in unit 2. The first bending portion 7 and the second bending portion 8 are connected between the first fixing portion 5 and the second fixing portion 6. The first bending portion 7 is connected substantially vertically downward from the first fixing portion 5. The second curved portion 8 is connected to the first curved portion 7 at a substantially right angle, that is, substantially horizontally. The second bending portion 8 is further connected to the second fixing portion 6.

  The second fixing portion 6 is fixed to the electronic component 2 at a position opposite to the first fixing portion 5 with respect to the electronic component 2. The first bending portion 7 is provided on the far side from the electronic component 2 of the straight line 60 that connects the first fixing portion 5 and the second fixing portion 6, and is bent with respect to the first neutral shaft 9. . The second bending portion 8 is curved with respect to a second neutral shaft 10 provided in a plane including the straight line 60 and the first neutral shaft 9 and on the side far from the electronic component 2 of the straight line. .

  The connecting portions of the first bending portion 7 and the second bending portion 8 are fixedly connected to each other. Further, the first fixing portion 5 and the first bending portion 7 are also fixedly connected to each other, and the second fixing portion 6 and the second bending portion 8 are also fixedly connected to each other.

  When the electronic device receives an impact load, the first bending portion 7 and the second bending portion 8 cause bending deformation about the first neutral shaft 9 and the second neutral shaft 10, respectively. To absorb. The first bending portion 7 and the second bending portion 8 are arranged so as not to hit the storage portion 4 and the built-in unit 2 when they undergo bending deformation. That is, the second bending portion 8 has at least a length that does not contact the built-in unit 2 even if the first bending portion 7 undergoes a predetermined amount of bending deformation. Here, the predetermined amount of bending deformation is, for example, the amount of bending deformation that occurs when the nominal impact acceleration of the housing 1 is applied to the housing 1. Note that the neutral axis is an axis between the outer extension region and the inner contraction region in the case of bending deformation and connecting the points where neither expansion nor contraction occurs.

  As shown in FIG. 2, the shock absorber 3 has an L shape extending in two directions along each side at the four corners of the rectangular storage unit 4 and the built-in unit 2 in a plan view. That is, the shock absorber 3 connects the second fixing portion 6 to one in the direction in which the two second bending portions 8 are orthogonal to each other, and the first bending portion 7 is connected to each of the two second bending portions 8. Connect one by one. Further, the shock absorber 3 has a second fixing portion 6 fixed to the bottom surface of the built-in unit 2 around one corner of the built-in unit 2, and is substantially second to two side surfaces of the built-in unit 2 that are orthogonal to each other. The first curved portions 7 face each other at a distance of the curved portion 8.

  As shown in FIG. 1, two reinforcing plates 12 are arranged on the bottom surface of the built-in unit 2 so as to sandwich the second fixing portion 6 of the shock absorber 3. The reinforcing plate 12 extends along the bottom surface of the built-in unit 2 to connect the second fixing portions 6 of the opposing shock absorbers 3 so as to prevent excessive loads from being concentrated on the bottom surface of the built-in unit 2. To work.

  According to the configuration of the present embodiment, when the electronic device receives an impact load, the first bending portion 7 and the second bending portion 8 of the shock absorber 3 undergo bending deformation and absorb the impact. In particular, in the present embodiment, the shock absorber 3 bypasses between the built-in unit 2 and the storage unit 4 as compared to the case where the adjacent parts between the built-in unit 2 and the storage unit 4 are connected almost linearly. Therefore, it can take a large bending deformation and can absorb and consume large impact energy.

  Further, since the rigidity of the second fixing portion 6 can be strengthened by sandwiching the second fixing portion 6 with the reinforcing plate 12, the boundary condition between the built-in unit 2 and the shock absorber 3 becomes unstable. No fear.

  FIG. 4 shows a specific example of a method for attaching the reinforcing plate 12 in the second fixing portion 6 of the above embodiment. In the example of this figure, a thick portion 15 is formed at the tip of the second fixing portion 6 of the shock absorber 3, and a constricted portion (thin portion) 16 is formed at the base of the thick portion 15. Projecting portions 17 projecting toward the second fixing portion 6 are formed at the tips of the two reinforcing plates 12, respectively, and a clearance portion 18 opened in a direction away from the second fixing portion 6 is further provided at the tip. Is formed. When the second fixing portion 6 of the shock absorber 3 is vertically clamped and fixed by the two reinforcing plates 12, the protruding portion 17 of the reinforcing plate 12 is connected to the constricted portion 16 of the second fixing portion 6 of the shock absorber 3. The two reinforcing plates 12 sandwich the thick portion 15 of the second fixing portion 6 so that the second fixing portion 6 and the reinforcing plate 12 of the shock absorber 3 are firmly fixed.

  Although not shown in FIG. 4, the built-in unit 2, the two reinforcing plates 12, and the second fixing portion 6 of the shock absorber 3 are fixed to each other by bolts or the like.

  FIG. 5 shows another example of a method for attaching the second fixing portion 6 and the reinforcing plate 12. The example of FIG. 5 is a partial modification of the example of FIG. 4, and a recess 21 is provided on the lower surface of the thick portion 15 of the second fixing portion 6. A protrusion 20 is provided at a position corresponding to one recess 21 on the lower side of the two reinforcing plates 12, so that the protrusion 20 enters the recess 21. By adopting such a configuration, the second fixing portion 6 of the shock absorber 3 and the reinforcing plate 12 are more firmly fixed.

  FIG. 6 shows still another example of a method for attaching the second fixing portion 6 and the reinforcing plate 12. In the example of FIG. 6, a rib 22 protruding in a direction away from the second fixing portion 6 of the shock absorber 3 is formed at the tip of the reinforcing plate 12. The rib 22 increases the rigidity of the reinforcing plate 12 and improves the impact resistance performance of the built-in unit 2.

  FIG. 7 shows a specific example of the structure of the first fixing portion 5 in the above embodiment. In the example of this figure, the first fixing portion 5 of the shock absorber 3 extends along the ceiling surface 30 of the storage portion 4 of the housing 1, and the presser plate 25 is disposed below the first fixing portion 5. The first fixing unit 5 is sandwiched between the ceiling surface 30 of the storage unit 4 and the presser plate 25. The ceiling surface 30 and the pressing plate 25 of the storage unit 4 are fastened to each other by, for example, a bolt (not shown). By setting it as such a structure, the 1st fixing | fixed part 5 is fixed firmly.

  FIG. 8 shows another example of the fixing method of the first fixing unit 5. This example is a partial modification of the example of FIG. In the example of FIG. 8, the protrusion 31 is provided on the ceiling surface 30 of the storage portion 4, and the inner side surface of the portion where the first curved portion 7 is vertically lowered from the first fixing portion 5 is in contact with the side surface of the protrusion 31. . Thereby, the horizontal movement of the 1st fixing | fixed part 5 is stopped. Further, a recess 32 is formed on the lower surface of the first fixing portion 5, and a protrusion 33 is formed on the upper surface of the pressing plate 25 at a position corresponding to the recess 32 so that the protrusion 33 enters the recess 32 and is stabilized. It is configured. The pressing plate 25, the first fixing portion 5, and the ceiling surface 30 of the storage portion 4 are fastened by bolts 34 and fixed to each other. According to the structure shown here, the 1st fixing | fixed part 5 is fixed further firmly.

  FIG. 9 shows still another example of the fixing method of the first fixing unit 5. This example is a partial modification of the example of FIG. In the example of FIG. 9, a receiving portion 35 is formed on the ceiling surface 30 of the storage portion 4 so as to surround the first fixing portion 5. A perforated projection 36 is further formed inside the receiving portion 35, and an opening 37 is formed in the first fixing portion 5 at a position surrounding the perforated projection 36. In order to fix the first fixing portion 5 to the storage portion 4, first, the first fixing portion 5 is inserted upward with respect to the receiving portion 35, and then the presser plate 25 is inserted from below the first fixing portion 5. Put it up. The presser plate 25 is provided with a protrusion 40 to be inserted inside a perforated protrusion 36 of a receiving portion 35 fixed to the ceiling surface 30. A split 42 extending in the vertical direction is formed in the protrusion 40, and after the protrusion 40 is inserted into the perforated protrusion 36, the press plate 25 and the first fixing portion 5 are connected to the ceiling surface of the storage portion 4. Falling from 30 is prevented.

  FIG. 10 shows still another example of the fixing method of the first fixing unit 5. This example is a partial modification of the example of FIG. In FIG. 10, similarly to FIG. 9, after the first fixing portion 5 is inserted into the receiving portion 35 provided on the ceiling surface 30 of the storage portion 4, the presser plate 25 is directed upward from below the first fixing portion 5. Put on. Further, similarly to FIG. 9, the protrusion 40 of the presser plate 25 is inserted inside the perforated protrusion 36 of the receiving portion 35 fixed to the ceiling surface 30.

  In the example of FIG. 10, the holding plate 25 not only fixes and covers the first fixing portion 5 of one shock absorber but also passes through the lower part of the built-in unit 2 to the other shock absorber 3 on the opposite side. I have also contacted. Furthermore, a part of the housing 1 and the presser plate 25 are fastened by bolts 45, and the presser plate 25 forms a part of the housing.

  By setting it as such a structure, the whole electronic device containing a built-in unit and a buffer device can be made into a simple structure.

  Although various embodiments of the present invention have been described above, these are merely examples, and the present invention is not limited to these. For example, in the above-described embodiment, the shock absorber is connected in a direction in which two second bending portions are orthogonal to one second fixing portion, and each of the two second bending portions has one first bending portion. The three-dimensional (three-dimensional) shape is connected to each other. For example, one second curved portion is connected in a direction orthogonal to one second fixed portion, and one first A planar plate in which the first curved portions are connected to the two curved portions one by one may be bent or connected. In this case, the plate is easily bent and deformed, and soft support can be achieved.

  Further, for example, in the above embodiment, the built-in unit, the reinforcing plate, and the second fixing portion of the shock absorber are fixed to each other by a bolt or the like, but in addition to the bolt, the reinforcing plate and the second fixing portion of the shock absorber In addition, the built-in unit and the reinforcing plate can be bonded by an adhesive material. In this case, the coupling between the second fixing portion of the shock absorber and the built-in unit is further ensured. Further, if the adhesive strength is sufficient, the bolt may be omitted.

  Further, for example, in the above embodiment, the ceiling surface of the storage unit, the presser plate, and the first fixing portion of the shock absorber are fixed to each other by a bolt or the like, but in addition to the bolt, the first of the presser plate and the shock absorber. It is also possible that the fixing part of the storage part and the ceiling surface of the storage part and the first fixing part of the shock absorber are bonded by an adhesive material. In this case, the coupling between the first fixed portion of the shock absorber and the ceiling surface of the storage portion is further ensured. Further, if the adhesive strength is sufficient, the bolt may be omitted.

  Further, in the above embodiment, the shock absorber is supported by the ceiling surface of the housing housing part and supports the bottom surface of the built-in unit. However, the structure may be reversed upside down, and the housing housing part Even if it is supported on the side, it can be structured such that it is laid down. In addition, the housing housing portion may not be a rectangular parallelepiped space as long as it has a flat surface portion that can fix the first fixing portion of the shock absorber, and does not need to be a sealed space. The built-in unit does not have to be a rectangular parallelepiped as long as it has a flat surface portion that can fix the second fixing portion of the shock absorber.

  Even if there is no reinforcing plate, there is no problem if the built-in unit itself has high rigidity. In addition, the first bending portion and the second bending portion are not necessarily perpendicular to each other as long as they face different directions.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational sectional view of a main part of an embodiment of an electronic apparatus including an electronic component support member (buffer device) according to the present invention. FIG. 2 is a cross-sectional plan view taken along line AA in FIG. 1. FIG. 2 is a schematic vertical sectional view showing an enlarged main part of FIG. 1. The partial expanded sectional view which shows the specific example of the 2nd fixing | fixed part vicinity of embodiment of FIG. The partial expanded sectional view which shows the other specific example of the 2nd fixing | fixed part vicinity of embodiment of FIG. The partial expanded sectional view which shows the other specific example of the 2nd fixing | fixed part vicinity of embodiment of FIG. The principal part sectional drawing of other embodiment of the electronic device containing the electronic component support member (buffer apparatus) which concerns on this invention. The partial expanded sectional view which shows the other specific example of the 1st fixing | fixed part vicinity of embodiment of FIG. The partial expanded sectional view which shows the other specific example of the 1st fixing | fixed part vicinity of embodiment of FIG. The partial expanded sectional view which shows the other specific example of the 1st fixing | fixed part vicinity of embodiment of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing | casing 2 ... Built-in unit (electronic component), 3 ... Buffering device, 4 ... Storage part, 5 ... 1st fixing | fixed part, 6 ... 2nd fixing | fixed part, 7 ... 1st bending part, 8 ... 2nd bending part, 9 ... 1st neutral axis, 10 ... 2nd neutral axis, 12 ... Strengthening plate, 15 ... Thick part, 16 ... Constriction part, 17 ... Projection part, 18 ... Escape part, 20 ... Projection, 21 ... depression, 22 ... rib, 25 ... retainer plate, 30 ... ceiling surface, 31 ... projection, 32 ... depression, 33 ... projection, 34 ... bolt, 35 ... receiving part, 36 ... perforated projection, 37 ... Opening, 40 ... projection, 42 ... crack, 45 ... bolt

Claims (2)

In the electronic component support member that supports the corner where the two sides of the electronic component intersect in the housing,
An L-shaped first fixing portion fixed to the housing and extending parallel to two sides of the corner of the electronic component;
A second fixing portion fixed to the electronic component at a position opposite to the first fixing portion;
It is fixedly connected to the first fixed part, and extends in a planar shape from each side of the L-shaped first fixed part without contacting any of the housing and the electronic component, and has an L-shaped cross section. A first curved portion having a bent plate shape;
A first flat plate that is fixedly connected to the first curved portion and the second fixed portion, and is perpendicular to each surface of the first curved portion without contacting any of the housing and the electronic component . Two curved portions;
Have
An electronic component support member made of a viscoelastic material and configured to absorb an impact by bending deformation of the first curved portion and the second curved portion . In an electronic device having a housing, an electronic component, and a plurality of electronic component support members that support corners where two sides of the electronic component intersect in the housing,
The electronic component support member is
Formed of viscoelastic material,
An L-shaped first fixing portion fixed to the housing and extending parallel to two sides of the corner of the electronic component;
A second fixing portion fixed to the electronic component at a position opposite to the first fixing portion;
It is fixedly connected to the first fixed portion, and extends in a planar shape from each side of the L-shaped first fixed portion without contacting any of the housing and the electronic component, and has an L-shaped cross section. A first curved portion having a bent plate shape;
A second plate that is fixedly connected to the first curved portion and the second fixed portion and has a flat plate shape perpendicular to each surface of the first curved portion without contacting any of the housing and the electronic component . A curved portion;
The electronic apparatus is configured to absorb an impact by bending deformation of the first bending portion and the second bending portion .

Images