JP2004234740A - Mounting structure of built-in equipment and electronic equipment - Google Patents

Abstract

Provided is a mounting structure of a built-in device for preventing an excessive impact from being applied to a built-in device installed in a housing, and an electronic device employing the mounting structure.
A reinforcing member (3) is provided at a bottom portion of a housing (2) corresponding to a location where an internal device (1) is installed by forming a second gap (s2) between the housing (2) and an intervening member (6). A mounting tool 4 extending in the height direction was fixed on 3, and the built-in device 1 was fixed to the reinforcing member 3 via the mounting tool 4 and installed in the housing 2. A first shock absorbing member 9 is interposed in a first gap s1 between the built-in device 1 and the reinforcing member 3, and a second shock s2 is formed in a second gap s2 between the reinforcing member 3 and the bottom of the housing 2. Two shock absorbing members 10 are interposed.
[Selection] Fig. 2

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting structure of a built-in device with respect to a housing and an electronic device employing the mounting structure, and more particularly to installing the built-in device in an electronic device which is often carried around and used, while being hardly affected by an impact. The present invention relates to a mounting structure of a built-in device and an electronic device that can be used.
[0002]
[Prior art]
For example, Patent Literature 1 discloses a configuration in which an internal chassis is provided in a housing of a notebook computer, and a built-in device such as a disk device is installed in the internal chassis.
[0003]
[Patent Document 1]
JP-A-2002-108505
According to Patent Literature 1, a box-shaped storage portion for storing a built-in device is formed in an internal chassis, and the built-in device is stored in the storage portion, and then the internal chassis is installed in a housing.
[0005]
[Problems to be solved by the invention]
At present, for the purpose of, for example, reducing the cost of a notebook computer, it has been studied to incorporate a hard disk device for a desktop computer into the notebook computer. However, it is assumed that the hard disk drive for desktop computers is assumed to be stationary and used, and the product itself has a structure with improved impact resistance as compared to those for notebook computers that are frequently carried. Not.
[0006]
Therefore, in order to divert and install a hard disk device for a desktop computer to a notebook computer, it is necessary to make the mounting structure less susceptible to impact.
[0007]
In Patent Document 1, it is possible to suppress that the impact from the housing is directly transmitted to the built-in device by the internal chassis. However, the plane dimensions of the internal chassis are substantially the same as the plane dimensions of the housing. Since the recess for accommodating the built-in device is also formed, when an impact is applied to the housing, the internal chassis tends to be easily bent. Deflection of the internal chassis leads to vibration of built-in equipment housed in the internal chassis.
[0008]
The present invention has been made in view of the above-described problems, and has as its object to provide a mounting structure of a built-in device for preventing an excessive impact on a built-in device installed in a housing and an electronic device employing the mounting structure. Is to provide.
[0009]
[Means for Solving the Problems]
In the mounting structure of the built-in device of the present invention, a reinforcing member is provided on the bottom of the housing corresponding to the installation location of the built-in device, and a mounting tool extending in the height direction is fixed on the reinforcing member, Is fixed to a reinforcing member via the attachment and is installed in the housing.
[0010]
That is, a reinforcing member is provided on the bottom of the housing, and the mounting member is fixed to the reinforcing member on the side opposite to the side facing the bottom of the housing. The above-mentioned height direction means a direction away from the reinforcing member to which the fixture is fixed to the bottom of the housing. As a result, the built-in device attached to the mounting fixture is also separated from the housing, and in addition to the reinforcing member having a function of increasing the rigidity of the location where the built-in device is installed, the built-in device is not affected by the shock from the housing. The mounting structure is difficult to transmit.
[0011]
Further, the mounting structure of the built-in device of the present invention is characterized in that the built-in device is installed in the housing such that a first gap is formed between the built-in device and the reinforcing member.
[0012]
Accordingly, the built-in device can be installed on the reinforcing member without surface contact, and propagation of an impact from the housing side to the built-in device via the reinforcing member can be suppressed.
[0013]
Further, if a first shock absorbing member is interposed in the first gap, the first shock absorbing member can absorb a shock transmitted to the built-in device and suppress the vibration of the built-in device itself. Can be.
[0014]
Further, the mounting structure of the built-in device of the present invention is characterized in that the reinforcing member is installed in the housing such that a second gap is formed between the reinforcing member and the bottom of the housing.
[0015]
This allows the reinforcing member to be installed without surface contact with the bottom of the housing, suppresses the propagation of shock from the housing side to the reinforcing member, and reduces the bending of the reinforcing member and the vibration of the built-in equipment caused by this bending. Can be suppressed.
[0016]
If a second shock absorbing member is interposed in the second gap, the second shock absorbing member can absorb a shock transmitted to the reinforcing member and the built-in device, and can reduce the impact of the reinforcing member and the built-in device itself. Vibration can also be suppressed.
[0017]
The first and second shock absorbing members have a shock absorbing power, a vibration damping performance, and the like, and are made of, for example, rubber, resin, natural soft sponge, or the like.
[0018]
Further, an electronic device of the present invention includes a housing and a built-in device installed in the housing, and the built-in device is installed in the housing with the above-described mounting structure.
[0019]
This improves the reliability and service life of the built-in device, which improves the quality and cost performance of the electronic device as a whole.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(First Embodiment)
FIG. 8 illustrates, for example, a notebook computer as the electronic apparatus according to the present embodiment. The drawing shows a state in which a keyboard and the like on the upper surface of the main body 21 are removed to clearly show the built-in device 1 installed on the bottom of the housing 2.
[0022]
The electronic device 20 is configured such that a lid 23 is attached to a main body 21 so as to be freely opened and closed. Various built-in devices (for example, the hard disk device 1 is shown in the drawing) are installed in the housing 2 on the inside 21 side, and a liquid crystal display panel 22 is housed in the lid 23. In the housing 2, an optical disk device, a circuit board, and the like are installed as other built-in devices not shown.
[0023]
Next, a mounting structure of the built-in device 1 to the housing 2 will be described. FIG. 1 is an enlarged perspective view of a place where the built-in device 1 is installed, and FIG. 2 is a front view thereof. In FIG. 2, the screws 5, 7, and 8 shown in FIG. 1 are omitted.
[0024]
A reinforcing member 3 is provided at the bottom of the housing 2 corresponding to the location where the built-in device 1 is installed. The reinforcing member 3 is, for example, a plate made of stainless steel, and has a rectangular shape as shown in FIG. Screw holes 11 and 12 are formed in the four corners of the reinforcing member 3 and near the center of the opposing long side edge 3a. A screw for fixing the reinforcing member 3 to the bottom of the housing 2 is screwed into the screw hole 11, and a screw for fixing an attachment 4 described later to the reinforcing member 3 is screwed into the screw hole 12. .
[0025]
FIG. 4 shows a back surface of the reinforcing member 3, and a ring-shaped intervening member 6 is fixed to the back surface at a position corresponding to the screw hole 12 by, for example, welding. The screw hole 12 penetrates the reinforcing member 3 and the intervening member 6.
[0026]
The reinforcing member 3 is fixed to the bottom of the housing 2 with the back surface on which the intervening member 6 is formed facing the bottom of the housing 2. Specifically, the screw 5 (see FIG. 1) is screwed into the screw hole 11 to fix the reinforcing member 3 to the housing 2. At this time, as shown in FIG. 2, a second gap s2 is formed between the portion inside the long side edge 3a of the reinforcing member 3 and the housing 2 by the height of the interposition member 6. .
[0027]
A sheet-like second shock absorbing member 10 is provided in the second gap s2. The second shock rest member 10 is made of a rubber-based material such as sorbosein (trade name) or Polon (trade name).
[0028]
FIG. 6 shows a positional relationship between the reinforcing member 3 and the second shock absorbing member 10. The second shock absorbing member 10 extends over substantially the entire area inside the long side edge 3a of the reinforcing member 3.
[0029]
Further, the second shock absorbing member 10 is not interposed between the reinforcing member 3 and the bottom of the housing 2 in a crushed state, but is simply laid on the bottom of the housing 2.
Therefore, the housing 2 does not bulge outward due to the elasticity of the second shock absorbing member 10.
[0030]
A pair of attachments 4 are installed on the long side edge 3a on the surface side of the reinforcing member 3. The attachment 4 has a substantially U-shaped cross section, and extends along the long side edge 3 a of the reinforcing member 3. A notch 4c (see FIG. 1) is formed in the vicinity of the center of the horizontal plate portion 4a of the fixture 4 which is in contact with the long side edge 3a. As shown in FIG. 5, the horizontal plate portion 4a has screw holes 13 formed at both ends, and the screw holes 13 are formed adjacent to the notch 4c.
[0031]
After matching the screw holes 13 with the screw holes 12 formed in the long side edge 3a of the reinforcing member 3, the screws 8 (see FIG. 1) are screwed into the screw holes 13, 12. As a result, the fixture 4 is fixed by bringing its horizontal plate portion 4a into contact with the long side edge 3a of the reinforcing member 3.
[0032]
At this time, as shown in FIG. 1, the notch 4c formed in the horizontal plate portion 4a can prevent the reinforcing member 3 and the screw 5 for fastening the housing 2 from hitting each other.
In addition, the length of the attachment 4 is shorter than the length of the long side edge 3 a of the reinforcing member 3, and does not collide with the screws 5 located at both ends of the reinforcing member 3.
[0033]
A vertical plate portion 4b extending above the reinforcing member 3 is integrally connected to the horizontal plate portion 4a of each of the pair of attachments 4. The respective vertical plate portions 4b face each other along the long side edge 3a of the reinforcing member 3, and the built-in device 1 is attached so as to be sandwiched between these facing surfaces. Specifically, as shown in FIG. 1, the attachment 4 and the built-in device 1 are mutually fastened by the screws 7 screwed to the vertical plate portion 4 b and the side of the built-in device 1.
[0034]
As shown in FIG. 2, the built-in device 1 is attached to the vertical plate portion 4 b of the attachment 4 in a state of being floated from the reinforcing member 3. That is, the first gap s1 is formed between the back surface of the built-in device 1 and the front surface of the reinforcing member 3. A first shock absorbing member 9 is disposed in the first gap s1.
[0035]
As the first shock absorbing member 9, for example, a series No. FF-7500 (material: special rubber), FF-5100T (material: butyl rubber), FF-4990 (material: low resilience silicone), FFS-4000 (material: general-purpose silicone), and the like can be used.
[0036]
As shown in FIG. 7, the first shock absorbing member 9 does not extend over the entire back surface of the built-in device 1, and avoids the circuit board portion 14 of the built-in device 1, and rotates the built-in magnetic disk rotating unit 15. It is arranged in. Thus, the heat radiation of the circuit board portion 14 on which components that generate heat during operation are mounted is not impaired by the first shock absorbing member 9.
[0037]
The first shock absorbing member 9 is disposed in the first gap s1 in a state where the pressure is narrowed between the surface of the reinforcing member 3 and the back surface of the built-in device 1 and slightly crushed.
[0038]
As described above, the built-in device 1 is fixed to the housing 2 via the reinforcing member 3 and the fixture 4 in a structure in which an impact is not directly transmitted from the housing 2. In addition, the rigidity of the plate-shaped reinforcing member 3 can prevent the mounting portion from bending, and can suppress the vibration of the built-in device 1. Furthermore, the first and second shock absorbing members 9 and 10 suppress the propagation of a shock from the housing 2 and also suppress the vibration of the built-in device 1 itself.
[0039]
In assembling the above-described mounting structure, the horizontal plate portion 4a of the mounting portion 4 is first mounted on the reinforcing member 3 screwed to the bottom of the housing 2, and then the vertical plate portion 4b of the mounting portion 4 is mounted. The horizontal plate portion 4a of the fixture 4 may be screwed to the reinforcing member 3 with the vertical plate portion 4b of the fixture 4 attached to the side of the built-in device 1 first. You may make it.
[0040]
Next, an impact test performed on the mounting structure of the present embodiment will be described in comparison with a comparative example.
[0041]
(Test method)
The built-in device 1 attached to the housing with the above structure is placed on a tray together with the housing, and the tray is dropped from a height of about 20 cm so that an impact acceleration of about 120 G acts on the housing. At this time, a temporal change (impact waveform) of the impact acceleration acting on the built-in device 1 is measured. The impact acceleration acting on each of the housing and the built-in device 1 is obtained by an acceleration sensor attached to each.
[0042]
Similar tests were performed on the mounting structure of Comparative Example 1 and the mounting structure of Comparative Example 2. The mounting structure of Comparative Example 1 is a structure in which the mounting tool 4 mounted on the side of the built-in device 1 is directly mounted on the bottom of the housing without the intervention of the reinforcing member 3. Note that a first shock absorbing member 9 was interposed between the bottom of the housing and the back of the built-in device 1.
[0043]
The mounting structure of the comparative example 2 has a planar dimension approximately seven times as large as that of the reinforcing member 3 and a reinforcing member that can correspond to the internal chassis of Patent Document 1 having substantially the same planar size as the housing. 3 is a mounting structure provided between the built-in device 1 and the bottom of the housing 2 instead of 3.
[0044]
FIGS. 12, 16, and 17 show impact waveforms obtained by the above test. 12 shows an impact waveform of the mounting structure of the present embodiment, FIG. 16 shows the mounting structure of Comparative Example 1, and FIG. 17 shows the mounting structure of Comparative Example 2. The horizontal axis represents time, and the vertical axis represents impact acceleration. Further, the impact acceleration applied to the housing is indicated by a1, a5, a6, and the impact acceleration applied to the built-in device 1 is indicated by b1, b5, b6.
[0045]
In Comparative Example 1 shown in FIG. 16, there is a moment when the impact acceleration b5 with respect to the built-in device 1 reaches 500 G, but in the first embodiment shown in FIG. 12, the impact acceleration b1 is up to about 150 G at maximum. The impact as large as in Example 1 is not acting.
[0046]
In Comparative Example 2 shown in FIG. 17, there is a moment when an impact acceleration b <b> 6 greatly exceeding 500 G acts on the built-in device 1. This is probably because a member having substantially the same plane size as the housing (about seven times as large as the reinforcing member 3 of the present embodiment) vibrates so as to bend.
[0047]
The plane size of the reinforcing member 3 according to the present embodiment is not unnecessarily large and is slightly larger than the plane size of the built-in device 1, and vibration caused by bending of the reinforcing member 3 can be suppressed. More specifically, the edge 3a of the housing 3 and the attachment 4 is larger than the built-in device 1 by the edge 3a required for screwing. The width of the protruding edge 3a is set to about 10 mm in the case of using a screw having a diameter of 2.5 mm, for example, in consideration of the strength that can withstand screwing.
[0048]
(Second embodiment)
Next, a mounting structure of a built-in device according to a second embodiment of the present invention will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0049]
As shown in FIG. 9, the present embodiment is different from the first embodiment in that a second shock absorbing member 10 is provided in a second gap s2 between the reinforcing member 3 and the housing 2. That is not done.
[0050]
For the mounting structure according to the second embodiment, an impact test similar to the above impact test was performed. The result is shown in FIG. The impact acceleration applied to the housing is indicated by a2, and the impact acceleration applied to the built-in device 1 is indicated by b2.
[0051]
As is clear from this result, also in the present embodiment, a large impact acceleration of 500 G or more does not act on the built-in device 1 as in Comparative Examples 1 and 2.
[0052]
(Third embodiment)
Next, a mounting structure of a built-in device according to a third embodiment of the present invention will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0053]
As shown in FIG. 10, this embodiment is different from the first embodiment in that a first shock absorbing member 9 is provided in a first gap s1 between the built-in device 1 and the reinforcing member 3. That is not done.
[0054]
For the mounting structure according to the third embodiment, an impact test similar to the above impact test was performed. FIG. 14 shows the result. The impact acceleration applied to the housing is indicated by a3, and the impact acceleration applied to the built-in device 1 is indicated by b3.
[0055]
As is clear from this result, also in the present embodiment, a large impact acceleration of 500 G or more does not act on the built-in device 1 as in Comparative Examples 1 and 2.
[0056]
(Fourth embodiment)
Next, a mounting structure of a built-in device according to a fourth embodiment of the present invention will be described. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0057]
As shown in FIG. 11, this embodiment is different from the first embodiment in that a first shock absorbing member 9 is provided in a first gap s1 between the built-in device 1 and the reinforcing member 3. That is, the second shock absorbing member 10 is not provided in the second gap s2 between the reinforcing member 3 and the housing 2.
[0058]
For the mounting structure according to the fourth embodiment, an impact test similar to the above impact test was performed. The result is shown in FIG. The impact acceleration applied to the housing is indicated by a4, and the impact acceleration applied to the built-in device 1 is indicated by b4.
[0059]
As is clear from this result, also in the present embodiment, a large impact acceleration of 500 G or more does not act on the built-in device 1 as in Comparative Examples 1 and 2.
[0060]
When comparing the results of the impact tests shown in FIGS. 12 to 15, the impact waveform of the first embodiment has the least fluctuation and the minimum peak, and thus the mounting structure according to the first embodiment is small. However, it can be said that the mounting structure can minimize the influence of the impact.
[0061]
Although the embodiments of the present invention have been described above, the present invention is, of course, not limited to these, and various modifications can be made based on the technical idea of the present invention.
[0062]
In the above embodiment, the number of screwing points between the reinforcing member 3 and the housing 2 is six, but more points may be screwed or less points (for example, only four corners). May be used.
[0063]
Regarding the screwing between each of the fixtures 4 and the reinforcing member 3, the number is not limited to three, but may be more than three. Alternatively, for example, only two places at both ends of the attachment 4 may be screwed. The same applies to screwing between the attachment 4 and the built-in device 1.
[0064]
Further, the fastening between the attachment 4 and the reinforcing member 3 and the fastening between the reinforcing member 3 and the housing 2 may be a co-tightening structure using a common screw 8 'as shown in FIG. That is, the screw 8 ′ is screwed to the horizontal plate portion 4 a of the fixture 4, the long side edge 3 a of the reinforcing member 3, and the bottom of the housing 2 to fasten each other.
[0065]
FIG. 19 shows a reinforcing member 3 ′ according to a modification. In the reinforcing member 3 ′, the inside of the edge 3 a is partially hollowed to reduce the weight. For example, in order to prevent a local decrease in strength, the hollow portions 33 are formed so as to have a symmetrical positional relationship with each other.
[0066]
The present invention can be applied to a mounting structure other than the hard disk device, and particularly to the mounting of a built-in device that is likely to malfunction or fail due to an impact, such as an optical disk device having a rotating mechanism or another device having a driving mechanism. It is valid.
[0067]
【The invention's effect】
According to the present invention, a reinforcing member is provided at the bottom of the housing corresponding to the installation location of the built-in device, and a mounting tool extending in the height direction is fixed on the reinforcing member, and the built-in device is mounted on the mounting device. Since it is fixed to the reinforcing member via the and installed in the housing, even if an impact is applied to the housing, it is possible to suppress the impact from reaching the built-in device, thereby preventing failure or malfunction of the built-in device. . In addition, the service life can be extended.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a mounting structure of a built-in device according to a first embodiment.
FIG. 2 is a front view of the mounting structure.
FIG. 3 is a plan view of a reinforcing member used in the mounting structure.
FIG. 4 is a rear view of the reinforcing member.
FIG. 5 is a rear view of the built-in device in which a fixture is fixed to a side portion.
FIG. 6 is a back view of a reinforcing member provided with a second shock absorbing member.
FIG. 7 is a rear view of the built-in device provided with the first shock absorbing member.
FIG. 8 is a partially cutaway perspective view of the electronic device according to the embodiment of the present invention.
FIG. 9 is a front view of a mounting structure according to a second embodiment.
FIG. 10 is a front view of a mounting structure according to a third embodiment.
FIG. 11 is a front view of a mounting structure according to a fourth embodiment.
FIG. 12 is a graph showing an impact test result of the mounting structure according to the first embodiment.
FIG. 13 is a graph showing an impact test result of the mounting structure according to the second embodiment.
FIG. 14 is a graph showing an impact test result of the mounting structure according to the third embodiment.
FIG. 15 is a graph showing an impact test result of the mounting structure according to the fourth embodiment.
FIG. 16 is a graph showing an impact test result of the mounting structure of Comparative Example 1.
FIG. 17 is a graph showing the results of an impact test of the mounting structure of Comparative Example 2.
FIG. 18 is a perspective view showing a mounting structure of a built-in device according to a modification.
FIG. 19 is a plan view of a reinforcing member according to a modification.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Built-in apparatus, 2 ... Housing | casing, 3 ... Reinforcement member, 3a ... Edge part, 4 ... Fixture, 6 ... Interposed member, 9 ... 1st shock absorption member, 10 ... 2nd shock absorption member, 20 ... Electronic device, 33: hollow portion, s1: first gap, s2: second gap.

Claims (6)

A mounting structure of built-in equipment installed in the housing,
A reinforcing member is provided at the bottom of the housing corresponding to the installation location of the built-in device,
On the reinforcing member, fixing fixtures extending in the height direction,
A mounting structure for a built-in device, wherein the built-in device is fixed to the reinforcing member via the mounting tool and installed in the housing. The mounting structure for a built-in device according to claim 1, wherein the built-in device is installed in the housing such that a first gap is formed between the built-in device and the reinforcing member. The mounting structure for a built-in device according to claim 2, wherein a first shock absorbing member is interposed in the first gap. The mounting structure of a built-in device according to claim 1, wherein the reinforcing member is installed in the housing such that a second gap is formed between the reinforcing member and the bottom of the housing. The mounting structure for a built-in device according to claim 4, wherein a second shock absorbing member is interposed in the second gap. An electronic device employing the mounting structure for a built-in device according to claim 1.

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