JP2007207330A - Buffer support member, buffer support structure, and portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a buffer support member and a buffer support structure capable of achieving high assembling workability, and preventing a reduction in buffer effects as much as possible, and a portable terminal, regarding a buffer support member for supporting an electronic device while protecting it from shocks, a buffer support structure for supporting the electronic device by using the buffer support member, and a portable terminal configured by housing the electronic device in a device casing by the buffer support structure. <P>SOLUTION: The buffer support member of an electronic device is provided with a flat platelike base, and a support projection erected in the base to support the electronic device. An opening is formed in the base part of the support projection of the base to release the surroundings of the support projection. In the buffer support structure which abuts, by using the buffer support member configured by erecting the support projection in the flat platelike base, the electronic device on the support projection of the buffer support member to support it, an opening is formed in the base part of the support projection in the base of the buffer support member to release the surroundings of the support projection. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to a buffer support member that supports an electronic device while protecting the electronic device from an impact, and further includes a buffer support structure that supports the electronic device using the buffer support member, and an interior of a device housing by the buffer support structure. The present invention relates to a portable terminal that houses and installs electronic equipment.

For example, mobile phones, which are examples of mobile terminals, have recently been provided with products equipped with HDD (Hard Disk Drive) devices so as to be able to store large amounts of data such as documents, still images, and music and movies. (For example, see Patent Document 1 and Patent Document 2).

Further, in a mobile phone equipped with an HDD device, as shown in FIGS. 11 and 12, a plurality of cushion members (buffer support members) made of an elastic material such as rubber or gel are formed on a substrate B installed inside the device casing. ) By installing the HDD device H via P, P..., The HDD device H, which is an electronic device that is sensitive to impact because it has a precise operation part, can be protected from a large impact when it falls. It is configured.
JP 2005-284335 A JP 2003-263853 A

    By the way, in the structure mentioned above, since the strength of the cushion member P made of an elastic material such as rubber or gel is low, not only the assembly workability is lowered due to the difficulty of handling, but also the HDD device H has a relationship with the cushion member P. The plurality of cushion members P, P... Must be positioned while taking into consideration the places where they can come into contact with each other.

  In order to solve the above problem, in the configuration shown in FIGS. 13 and 14, a cushion member (buffer support member) Q made of an elastic material such as rubber or gel, more specifically, a flat base Qb and a plurality of support protrusions Qp. , Qp... And an HDD device (electronic device) H is installed on the substrate B via a cushion member Q formed by standing a frame Qf on the outer periphery of the base Qb. H is positioned by the frame Qf of the cushion member Q and is supported by a plurality of support protrusions Qp, Qp.

  According to the above configuration, the plurality of support protrusions Qp, Qp,... Are integrally formed with the base Qb, thereby eliminating the deterioration in assembly workability due to the positioning of the support protrusions Qp with respect to the HDD device H and the difficulty in handling. It becomes possible.

  However, in the configuration shown in FIG. 11 and FIG. 12, the cylindrical cushion member P is interposed over the entire height of the space S between the substrate B and the HDD device H as shown in FIG. On the other hand, in the configuration shown in FIGS. 13 and 14, the support protrusion Qp of the cushion member Q is erected integrally with the base Qb, so that the height Sp of the support protrusion Qp is as shown in FIG. However, the buffering effect is reduced due to the shortening of the support protrusion Qp that is substantially disturbed by the wall thickness Sb of the base Qb and decreases.

  In view of the above circumstances, an object of the present invention is to provide a buffer support member, a buffer support structure, and a portable terminal that can achieve good assembly workability and can prevent a decrease in buffer effect as much as possible. There is.

    In order to achieve the above object, a shock-absorbing support member according to the invention of claim 1 is a shock-absorbing support member comprising a flat plate-like base and a support protrusion that stands on the base and supports an electronic device. An opening for releasing the periphery of the support protrusion is formed at the base of the support protrusion in the base.

  The shock-absorbing support member related to the invention of claim 2 is the shock-absorbing support member related to the invention of claim 1, wherein the total angle range of the openings formed in the base centering on the support protrusion is 240 ° or more. It is characterized by.

  According to a third aspect of the present invention, there is provided a shock absorbing support member according to the first aspect of the present invention, wherein the support protrusion has a cylindrical shape.

  According to a fourth aspect of the present invention, there is provided a shock absorbing support member according to the first aspect of the present invention, wherein the plurality of support protrusions are arranged and formed in such a manner that the centroids of the plurality of support protrusions coincide with the center of gravity of the electronic device. It is characterized by that.

  According to a fifth aspect of the present invention, there is provided a shock absorbing support structure that uses a shock absorbing support member in which a support protrusion is erected on a flat plate-like base, and supports an electronic device by contacting the support protrusion of the shock absorbing support member. Then, an opening for releasing the periphery of the support protrusion is formed in the base of the support protrusion in the base of the buffer support member.

  According to a sixth aspect of the present invention, there is provided a portable terminal using a buffer support member in which a support protrusion is provided upright on a flat base, and a buffer support structure that supports an electronic device by contacting the support protrusion of the buffer support member. A portable terminal in which an electronic device is housed and installed inside a device housing, wherein an opening for releasing the periphery of the support protrusion is formed at the base of the support protrusion in the base of the buffer support member. .

  According to a seventh aspect of the present invention, there is provided a portable terminal according to the sixth aspect, wherein the electronic device is a hard disk drive device.

According to an eighth aspect of the present invention, there is provided a portable terminal comprising: a wiring board on which electronic components are mounted; an information recording medium for recording information; a buffer support member having a support protrusion standing on a flat base; A portable terminal comprising a first cover member and a second cover member made of sheet metal, wherein the buffer support member supports the information recording medium in contact with the support protrusion, and the first cover member And being attached to the wiring board in a state surrounded by the second cover member.

According to a ninth aspect of the present invention, there is provided a portable terminal according to the eighth aspect of the present invention, wherein the first cover member and the second cover member are attached together by screwing together with the wiring board. It is characterized by that.

    In the buffer support member of the electronic apparatus according to the invention of claim 1, the buffer effect is reduced due to the support protrusion being erected on the base by forming an opening in the base and releasing the periphery of the base portion of the support protrusion. Therefore, it is possible to prevent the buffer effect from being lowered as much as possible while maintaining good assembly workability.

  In the buffer support member of the electronic device according to the invention of claim 2, the support protrusion is erected on the base by setting the total angle range around the support protrusion of the opening formed in the base to 240 ° or more. It is possible to effectively avoid a decrease in the buffer effect, and to prevent a decrease in the buffer effect as much as possible while maintaining good assembly workability.

  In the buffer support member of the electronic device according to the invention of claim 3, by forming the support protrusion in a cylindrical shape, the support protrusion is uniformly deformed over the entire circumference at the time of compression. It is possible to prevent the buffer effect from being lowered as much as possible while maintaining good assembly workability.

  In the buffer support member of the electronic device according to the invention of claim 4, since the plurality of support protrusions are arranged and formed in such a manner that the centroid coincides with the center of gravity of the electronic device, a good buffer effect can be obtained over the entire electronic device. As a result, it is possible to prevent the buffer effect from being lowered as much as possible while maintaining good assembly workability.

  In the shock-absorbing support structure according to the fifth aspect of the present invention, an opening is formed in the base of the shock-absorbing support member and the periphery of the base portion of the support protrusion is released, so that the shock-absorbing effect due to the support protrusion being erected on the base. The reduction can be avoided as much as possible, and the deterioration of the buffer effect can be prevented as much as possible while maintaining good assembly workability.

  In the portable terminal according to the invention of claim 6, since the opening of the buffer support member is formed to release the periphery of the base portion of the support protrusion, the buffer effect due to the support protrusion standing on the base is reduced. Therefore, it is possible to prevent the buffer effect from being lowered as much as possible while maintaining good assembly workability.

  In the portable terminal according to the seventh aspect of the invention, it is possible to prevent the buffer effect from being lowered as much as possible while maintaining good assembly workability of the portable terminal equipped with the hard disk drive device.

  In the mobile terminal according to the invention of claim 8, it is possible to obtain a buffering effect while maintaining good assembly workability of the mobile terminal equipped with the information recording medium. In addition, since the information recording medium is surrounded by a cover made of sheet metal, the electronic component is not easily affected by high frequency noise during operation of the information recording medium, and the stability of the wireless performance can be maintained.

  In the mobile terminal according to the invention of claim 9, since the two cover members are attached to the wiring board by fastening together, the connection between the two covers and the wiring board can be performed more reliably, and the stability of the wireless performance is further improved. be able to.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 8 show an embodiment in which the present invention is applied to a foldable mobile phone which is an aspect of a mobile terminal. The mobile phone 1 includes a lower housing 2 and an upper housing 3 which are connected to each other. It is configured by connecting in an openable and closable manner.

  The lower casing (equipment casing) 2 of the mobile phone 1 is formed by assembling a lower inner case 2i and a lower outer case 2o, and a wiring board 2B is accommodated and installed in the lower casing 2. In addition, an HDD device (electronic device) 4 is mounted on the wiring board 2B.

  As shown in FIGS. 1 to 4, the HDD device 4 is mounted on a wiring board 2 </ b> B as an HDD assembly 10, and the HDD assembly 10 includes the HDD device 4, one cushion member (buffer support member) 5, and the other cushion. It is composed of a member (buffer support member) 6 and a lower cover 7 and an upper cover 8.

  As will be described later in detail, the cushion member 5 and the other cushion member 6 have a flat base and a plurality of support protrusions erected on the base, and have a frame formed on the outer periphery of the base. The base, the support protrusion, and the frame are integrally formed using, for example, a rubber material such as TPS (thermoplastic styrene) or a gel material.

  The HDD device 4 is surrounded by one cushion member 5 and the other cushion member 6 assembled to each other, and only the flexible wiring 4F of the HDD device 4 extends outward.

  The lower cover 7 and the upper cover 8 are both made of sheet metal and are assembled together so as to surround the HDD device 4 together with the one cushion member 5 and the other cushion member 6.

  The lower cover 7 and the upper cover 8 are fastened together with screws at predetermined positions on the wiring board 2B, and the wiring board 2B has flexible wiring 4F extending outward from the lower cover 7 and the upper cover 8. Is connected. Incidentally, the lower cover 7 and the upper cover 8 made of sheet metal also function as a shield case of the HDD device 4. The influence of high frequency noise generated during operation of the HDD device 4 received by the electronic component mounted on the wiring board can be reduced, and the stability of the wireless performance can be maintained. Also, by attaching the lower cover 7 and the upper cover 8 together to the wiring board by fastening together, the connection between the cover and the wiring board can be performed more reliably, and high-frequency noise can be effectively discharged to the ground of the wiring board. The stability of wireless performance can be further enhanced.

Hereinafter, the one cushion member (buffer support member) 5 constituting the HDD assembly 10 described above will be described in detail with reference to FIGS.
The other cushion member (buffer support member) 6 that also constitutes the HDD assembly 10 is basically based on the same idea as the one in which the one cushion member 5 is turned upside down. Is omitted.

On the other hand, the cushion member 5 has a flat base 5b as described above and a plurality of support protrusions 5p, 5p... Standing on the base 5b, and a frame 5f formed on the outer periphery of the base 5b. is doing.
Incidentally, in this embodiment, the thickness of the base 5b is set to 0.8 mm, and the height of the support protrusion 5p is set to 1.7 mm.

  The base 5 b has a rectangular shape corresponding to the planar shape of the HDD device 4, and the frame 5 f formed on the outer periphery of the base 5 b has a rectangular frame shape that follows the outer periphery of the HDD device 4. Yes.

  The plurality of support protrusions 5p, 5p,... Each have a cylindrical shape, and a base 5b on which the support protrusions 5p are erected is provided at the base of each support protrusion 5p. A total of four openings 5o, 5o,...

  As shown in FIG. 8, each of the four openings 5o, 5o,... Is formed through the base 5b, has a fan-shaped planar shape, and has an equal center angle with respect to the support protrusion 5p. It is radially formed at (90 °).

  Here, the opening 5o has a sector shape with a central angle α of 60 °, and the total angle range of the four openings 5o, 5o... Is set to 240 ° or more.

  In addition, the diameter Do of the circle drawn by the outer peripheral edge of the four openings 5o, 5o,... Is set to be approximately twice the diameter Dp of the support protrusion 5p, and in the embodiment, the diameter of the support protrusion 5p. Dp is set to 3.1 mm, and the outer peripheral diameter Do at the openings 5o, 5o... Is set to 6.2 mm.

  As shown in FIGS. 6 and 7, in a state where the HDD device 4 is mounted on the one cushion member 5, the HDD device 4 is positioned by the frame 5f and supported by a plurality of support protrusions 5p, 5p. .

  According to the above-described configuration, the plurality of support protrusions 5p, 5p,... Are integrally formed with the base 5b, thereby lowering the assembly workability due to the positioning of the support protrusions 5p with respect to the HDD device 4 and difficulty in handling. Will be eliminated.

  Further, the plurality of support protrusions 5p, 5p,... In the cushion member 5 are arranged and formed in such a manner that their centroids coincide with the center of gravity of the HDD device 4. Thereby, the impact on the HDD device 4 due to the drop can be dispersed by the plurality of support protrusions 5p, 5p..., And a good buffering effect can be obtained over the entire HDD device 4.

  Incidentally, in order to obtain an effective buffering effect on the HDD device 4, it is effective to support the outer peripheral area of the HDD device 4 as much as possible by a plurality of support protrusions as in the other cushion member 6 (see FIG. 2). Needless to say.

  Further, according to the above-described configuration, the opening 5o is formed in the base 5b of the cushion member 5 and the periphery of the base portion of the support protrusion 5p is released, so that the substantial height of the support protrusion 5p that produces a buffering effect is increased. , It becomes large from the bottom of the base 5b to the top of the support protrusion 5p.

  As a result, it is possible to avoid as much as possible a reduction in the buffering effect due to the support protrusions 5p being erected on the base 5b, and to prevent the buffering effect from being lowered as much as possible while maintaining good assembly workability. It becomes possible.

  FIG. 9 is a graph comparing acceleration due to impact when an acceleration sensor that is regarded as an HDD device is wrapped with a cushion member corresponding to one cushion member 5 and the other cushion member 6 and dropped from the same height. The horizontal axis shows Case Nos. I to VII in which the presence / absence of an opening in the cushion member and the angle range are different, and the vertical axis shows the acceleration (unit: G) due to the drop impact. The thickness of the cushion member is 2.5 mm (base thickness 0.8 mm + protrusion height 1.7 mm).

Case No. I has only a support protrusion without a base as a cushion member. The acceleration due to drop impact is extremely small, and ideal results can be obtained.
Case No.II does not have an opening around the support protrusion, and Case No.III, IV, V, VI, and VII have a total angle range of 60 °, 120 °, 180 °, 240 Acceleration due to drop impact becomes smaller as it goes from Case No. II to Case No. VII.

  Here, when the total angle range of the openings is 300 °, it is difficult to produce an actual cushion member, and when the total angle range of the openings is 240 °, the acceleration due to the drop impact is close to ideal. Since it is small, in the one cushion member 5 of an Example, the total angle range in four opening 5o, 5o ... is 240 degrees or more.

  Thus, according to the configuration described above, the total angular range of the four openings 5o, 5o... Formed in the one cushion member 5 is 240 ° or more, and thus the support protrusion 5p is erected on the base 5b. It is possible to effectively avoid a decrease in the buffering effect, and it is possible to prevent the buffering effect from being lowered as much as possible while maintaining good assembly workability.

  Further, according to the above-described configuration, the support protrusion 5p of the one cushion member 5 has a cylindrical shape. For example, when the support protrusion has a prismatic shape, stress is concentrated on the corner portion, so that the buffering effect is reduced. In contrast, when the support protrusions are uniformly deformed over the entire circumference during compression, a good buffering effect can be obtained, and the buffering effect can be reduced as much as possible while maintaining good assembly workability. Can be prevented.

  Here, in the one cushion member 5 of the above-described embodiment, the four openings 5o having a fan shape are formed around the support protrusion 5p in the base 5b. Needless to say, it can be set as appropriate in accordance with the specifications.

  For example, in the cushion member 15 shown in FIG. 10A, three fan-shaped openings 15o are formed radially around the support protrusion 15p in the base 15b. In the cushion member 25 shown in FIG. Four rectangular openings 25o are formed radially around the support protrusion 25p in the base 25b. In the cushion member 35 shown in FIG. 10 (c), there are six openings around the support protrusion 35p in the base 35b. The polygonal (substantially square) openings 35o are formed radially.

  Incidentally, in any of the embodiments shown in FIG. 10, it goes without saying that the support protrusion has a cylindrical shape and the total angular range of the openings is set to 240 ° or more.

  In any of the above-described embodiments, the openings having the same shape are radially formed around the support protrusion. However, the formation of the opening in a specific direction is restricted by the position of the support protrusion on the base. In this case, the shape of the opening in the direction subject to the restriction may be determined with priority.

  The material of the cushion member (buffer support member), the size of the support protrusion formed on the base of the cushion member, and the number of support protrusions formed on the base and the arrangement mode (layout) are described in the above embodiments. Needless to say, the number can be set as appropriate based on the design specifications of the mobile phone.

  Further, in the above-described embodiments, the example in which the present invention is applied to the mobile phone equipped with the HDD device which is one aspect of the electronic device has been described. However, various electronic devices other than the HDD device, in particular, an impact such as dropping. Of course, the present invention can be effectively applied to a mobile phone equipped with a weak electronic device.

  Further, the present invention is not limited to the mobile phone which is an aspect of the mobile terminal, and various communication devices such as a PHS (Personal Handyphone System), or a portable information terminal such as an electronic dictionary or a PDA (Personal Data Assistance). However, it goes without saying that the present invention can be applied very effectively.

The disassembled perspective view which shows the mobile telephone which is one Example of the portable terminal concerning this invention. FIG. 2 is an exploded perspective view showing an HDD assembly in the mobile phone of FIG. 1. FIG. 2 is an external perspective view showing an HDD assembly in the mobile phone of FIG. 1. FIG. 2 is an external perspective view showing a state where the HDD assembly in the mobile phone of FIG. 1 is mounted on a wiring board. BRIEF DESCRIPTION OF THE DRAWINGS The external appearance perspective view which shows notionally one Example of the buffer support member in connection with this invention. (a) And (b) is the top view and front view of a buffer support member which were shown in FIG. (a) is the VIIa-VIIa sectional view taken on the line in FIG. 6, (b) is the VIIb-VIIb sectional view taken on the line in FIG. (a) is a top view which expands and shows the principal part of the buffer support member shown in FIG. 5, (b) is the VIIIb-VIIIb sectional view taken on the line in FIG. 8 (a). The graph which shows the relationship between the shape of the opening in a buffer support member, and the acceleration at the time of fall. (a), (b), (c) is a principal part top view which shows the modification of the buffer support member in connection with this invention. The disassembled perspective view which shows the conventional buffer support structure. FIG. 12 is an essential part cross-sectional view of the buffer support structure shown in FIG. 11. The disassembled perspective view which shows the other conventional buffer support structure. FIG. 14 is a cross-sectional view of a main part of the buffer support structure shown in FIG. 13. (a) And (b) is principal part sectional drawing which compares and shows the buffer support structure shown in FIG. 11, and the buffer support structure shown in FIG.

Explanation of symbols

1 ... Mobile phone (mobile terminal),
2 ... Lower housing (equipment housing),
2i ... lower inner case,
2o ... lower outer case,
2B ... wiring board,
4. HDD device (electronic equipment),
5 ... One cushion member (buffer support member),
5b ... Base,
5p ... Support protrusion,
5o ... opening,
6 ... The other cushion member (buffer support member),
7 ... Bottom cover,
8 ... Upper cover,
10: HDD assembly.

Claims (9)

A buffer support member comprising a flat base and a support protrusion that is erected on the base and supports an electronic device,
An opening for releasing the periphery of the support protrusion is formed at the base of the support protrusion in the base. The buffer support member according to claim 1, wherein a total angle range of the openings formed in the base around the support protrusions is 240 ° or more. The buffer support member according to claim 1, wherein the support protrusion has a cylindrical shape. The buffer support member according to claim 1, wherein the plurality of support protrusions are arranged and formed in such a manner that the centroids of the plurality of support protrusions coincide with the center of gravity of the electronic device. A buffer support structure that uses a buffer support member formed by standing a support protrusion on a flat base, and supports an electronic device in contact with the support protrusion of the buffer support member,
A buffer support structure, wherein an opening for releasing the periphery of the support protrusion is formed in a base portion of the support protrusion in the base of the buffer support member. A buffer support member is used in which a support protrusion is erected on a flat base, and the electronic device is supported in contact with the support protrusion of the buffer support member to support the electronic device inside the device casing. A portable terminal that houses and installs equipment,
An opening for releasing a periphery of the support protrusion is formed in a base portion of the support protrusion in the base of the buffer support member. The portable terminal according to claim 6, wherein the electronic device is a hard disk drive device. A wiring board on which electronic components are mounted;
An information recording medium for recording information;
A shock-absorbing support member formed by standing a support protrusion on a flat base;
A first cover member made of sheet metal;
A portable terminal comprising a second cover member made of sheet metal,
The buffer support member supports the information recording medium in contact with the support protrusion,
A portable terminal, wherein the portable terminal is attached to the wiring board in a state surrounded by the first cover member and the second cover member. 9. The portable terminal according to claim 8, wherein the first and second cover members are attached to the wiring board by fastening them together with screws.

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